M4A78-EM
Contents
v
Notices
Federal Communications Commission Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
•
•
This device may not cause harmful interference, and
This device must accept any interference received including interference that may cause
undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with manufacturer’s instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not occur
in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or more of the following measures:
•
•
•
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment to an outlet on a circuit different from that to which the receiver is
connected.
•
Consult the dealer or an experienced radio/TV technician for help.
The use of shielded cables for connection of the monitor to the graphics card is required
to assure compliance with FCC regulations. Changes or modifications to this unit not
expressly approved by the party responsible for compliance could void the user’s authority
to operate this equipment.
Canadian Department of Communications Statement
This digital apparatus does not exceed the Class B limits for radio noise emissions from
digital apparatus set out in the Radio Interference Regulations of the Canadian Department
of Communications.
This class B digital apparatus complies with Canadian ICES-003.
DO NOT throw the motherboard in municipal waste. This product has been designed to
enable proper reuse of parts and recycling. This symbol of the crossed out wheeled bin
indicates that the product (electrical and electronic equipment) should not be placed in
municipal waste. Check local regulations for disposal of electronic products.
DO NOT throw the mercury-containing button cell battery in municipal waste. This symbol
of the crossed out wheeled bin indicates that the battery should not be placed in municipal
waste.
vi
Safety information
Electrical safety
•
To prevent electric shock hazard, disconnect the power cable from the electric outlet
before relocating the system.
•
When adding or removing devices to or from the system, ensure that the power cables
for the devices are unplugged before the signal cables are connected. If possible,
disconnect all power cables from the existing system before you add a device.
•
•
•
Before connecting or removing signal cables from the motherboard, ensure that all
power cables are unplugged.
Seek professional assistance before using an adapter or extension cord. These devices
could interrupt the grounding circuit.
Ensure that your power supply is set to the correct voltage in your area. If you are not
sure about the voltage of the electrical outlet you are using, contact your local power
company.
•
If the power supply is broken, do not try to fix it by yourself. Contact a qualified service
technician or your retailer.
Operation safety
•
•
•
•
Before installing the motherboard and adding devices on it, carefully read all the manuals
that came with the package.
Before using the product, ensure that all cables are correctly connected and the power
cables are not damaged. If you detect any damage, contact your dealer immediately.
To avoid short circuits, keep paper clips, screws, and staples away from connectors,
slots, sockets and circuitry.
Avoid dust, humidity, and temperature extremes. Do not place the product in any area
where it may become wet.
•
•
Place the product on a stable surface.
If you encounter technical problems with the product, contact a qualified service
technician or your retailer.
About this guide
This user guide contains the information you need when installing and configuring the
motherboard.
How this guide is organized
This guide contains the following parts:
•
Chapter 1: Product introduction
This chapter describes the features of the motherboard and the new technology it
supports.
•
Chapter 2: BIOS information
This chapter tells how to change system settings through the BIOS Setup menus.
Detailed descriptions of the BIOS parameters are also provided.
vii
Conventions used in this guide
To ensure that you perform certain tasks properly, take note of the following symbols used
throughout this manual.
DANGER/WARNING Information to prevent injury to yourself when trying to
:
complete a task.
CAUTION: Information to prevent damage to the components when trying to
complete a task.
IMPORTANT: Instructions that you MUST follow to complete a task.
NOTE: Tips and additional information to help you complete a task.
Where to find more information
Refer to the following sources for additional information and for product and software
updates.
1.
ASUS websites
The ASUS website provides updated information on ASUS hardware and software
products. Refer to the ASUS contact information.
2.
Optional documentation
Your product package may include optional documentation, such as warranty flyers,
that may have been added by your dealer. These documents are not part of the
standard package.
Typography
Bold text
Italics
Indicates a menu or an item to select.
Used to emphasize a word or a phrase.
<Key>
Keys enclosed in the less-than and greater-than sign means
that you must press the enclosed key.
Example: <Enter> means that you must press the Enter or
Return key.
<Key1>+<Key2>+<Key3>
If you must press two or more keys simultaneously, the key
names are linked with a plus sign (+).
Example: <Ctrl>+<Alt>+<D>
Command
Means that you must type the command exactly as shown,
then supply the required item or value enclosed in
brackets.
Example: At the DOS prompt, type the command line:
afudos /i[filename]
afudos /iM4A78EM.ROM
viii
M4A78-EM specifications summary
CPU
AMD® Socket AM2+ / AM2 for AMD® Phenom™ x4 /
Phenom™ x3 / Athlon™ x2 / Athlon™ / Sempron™
processors
Compatible with Phenom™ II / Athlon™ x4 / Athlon™ x3 /
Athlon™ x2 processors (AM3 CPU)
Supports 45nm CPU
AMD Cool ‘n’ Quiet™ 2.0 Technology (depends on CPU
type)
Supports CPU up to 125W
Chipset
AMD 780G / SB700
Front side bus
Up to 5200MT/s HyperTransport™ 3.0 interface for
AM3 / AM2+ CPU
2000 / 1600MT/s for AM2 CPU
Memory
Dual-channel memory architecture
4 x 240-pin DIMM slots support maximum 16GB unbuffered
ECC and non-ECC DDR2 1066/800/667MHz memory
modules
* DDR2 1066 is supported by AM3 / AM2+ CPU only.
(Qualified Vendors List).
*** When you install a total memory of 4GB or more,
Windows® 32-bit operating system may only recognize
less than 3GB. We recommend a maximum of 3GB
system memory if you are using a Windows® 32-bit
operating system.
Graphics
Integrated ATI Radeon™ HD 3200 GPU
Supports HDMI™ with max. resolution up to
1920x1200 (1080P)
Supports DVI-D (HDCP compliant) with max. resolution up to
2560x1600@60Hz dual-link
Supports RGB with max. resolution up to 2048x1536@85Hz
Supports Hybrid CrossFireX™ (for Windows® Vista only)
Dual VGA output supports:
RGB & DVI
RGB & HDMI
Maximum shared memory up to 256MB
support Hybrid CrossFireX™.
** The minimum system requirements of playing HD-DVD
and Blu-ray disc: Graphics shared memory of 256MB /
Dual-Core CPU / 1GB dual-channel DDR2 667 or
single-channel DDR2 800
Expansion slots
1 x PCIe x16 slot
1 x PCIe x1 slot
2 x PCI slots
(continued on the next page)
ix
M4A78-EM specifications summary
Storage / RAID
AMD SB700 southbridge:
-
-
1 x UltraDMA 133/100/66 connector
5 x Serial ATA 3Gb/s connectors support RAID 0,
RAID 1, and RAID 0+1 configurations (for Windows®
Vista only)
-
1 x eSATA 3Gb/s port supports JBOD
Audio
USB
Realtek® ALC887 High Definition Audio 8-channel CODEC
Supports Jack-detect and Multi-streaming technologies
Supports S/PDIF_OUT interface
Supports up to 12 USB 2.0/1.1 ports (6 ports at mid-board,
6 ports at the back panel)
LAN
PCIe Gb LAN
ASUS special features
ASUS Q-Fan
ASUS CrashFree BIOS3
ASUS EZ Flash2
ASUS MyLogo2
ASUS Express Gate
ASUS AI NET2
ASUS AI Nap
ASUS EPU-4 Engine
ASUS Turbo Key
ASUS overclocking
features
SFS (Stepless Frequency Selection) from 200MHz to
400MHz at 1MHz increment
Adjustable CPU voltage at 0.05V increment
ASUS C.P.R. (CPU Parameter Recall)
Back panel I/O ports
1 x PS/2 Keyboard / Mouse Combo port
1 x RJ-45 port
1 x VGA port
1 x DVI port
1 x eSATA port
1 x HDMI port
1 x Optical S/PDIF_OUT port
6 x USB 2.0/1.1 ports
8-channel audio ports
(continued on the next page)
x
M4A78-EM specifications summary
Internal I/O connectors
3 x USB 2.0/1.1 connectors support additional
6 USB 2.0/1.1 ports
1 x IDE connector
1 x COM connector
1 x LPT connector
5 x SATA connectors
1 x High definition front panel audio connector
1 x System panel connector
1 x CD audio-in connector
1 x S/PDIF_OUT connector
1 x CPU / 1 x Power / 1 x Chassis fan connectors
1 x Chassis intrusion connector
1 x 24-pin EATX power connector
1 x 4-pin ATX 12V power connector
BIOS
8Mb Flash ROM, AMI BIOS, PnP, DMI2.0, WfM2.0,
ACPI2.0a, SM BIOS 2.5
Accessories
1 x Serial ATA cable
1 x UltraDMA 133/100/66 cable
1 x I/O shield
1 x User Manual
Form factor
MicroATX form factor: 9.6 in x 9.6 in (24.4 cm x 24.4 cm)
Support DVD
Drivers
ASUS LiveUpdate Utility
ASUS PC Probe II
Anti-Virus software (OEM version)
*Specifications are subject to change without notice.
xi
xii
Chapter 1
Product introduction
1.1
Welcome!
Thank you for buying an ASUS® M4A78-EM motherboard!
The motherboard delivers a host of new features and latest technologies, making it another
standout in the long line of ASUS quality motherboards!
Before you start installing the motherboard, and hardware devices on it, check the items in
your package with the list below.
1.2
Package contents
Check your motherboard package for the following items.
Motherboard
Cables
ASUS M4A78-EM motherboard
1 x Serial ATA cable
1 x UltraDMA 133/100/66 cable
Accessories
1 x I/O shield
Application DVD
Documentations
ASUS motherboard Support DVD
User Manual
If any of the above items is damaged or missing, contact your retailer.
1.3
Special features
1.3.1
Product highlights
AMD® Phenom™ II / Athlon™ x4 / Athlon™ x3 / Athlon™ x2
AM3 CPU support
This motherboard supports AMD® AM3 multi-core processors with unique
L3 cache and delivers better overclocking capabilities with less power
consumption. It features dual-channel DDR2 1066 memory support and
accelerates data transfer rate up to 5200MT/s via HyperTransport™ 3.0-
based system bus. This motherboard also supports AMD® CPUs in the
new 45nm manufacturing process.
ASUS M4A78-EM
1-1
AMD® Socket AM2+/AM2 Phenom™ x4 / Phenom™ x3 /
Athlon™ x2 / Athlon™ / Sempron™ CPU support
This motherboard supports AMD® Socket AM2+ multi-core processors. It
features dual-channel DDR2 1066 memory support and accelerates data
transfer rate up to 5200MT/s via HyperTransport™ 3.0-based system
bus. It also supports AMD® Cool ‘n’ Quiet Technology.
AMD® 780G chipset
The AMD 780G Northbridge is the latest AMD chipset designed for both
HT1.0 and HT 3.0 interface speed. It features the future mainstream
Hybrid CrossFire technology that significantly optimizes your 3D
performance.
HyperTransport™ 3.0 support
5200
HyperTransport™ 3.0 technology provides 2.6 times more bandwidth
than HT1.0 that radically improves system efficiency for a smoother and
faster computing environment.
MT/s
AMD Cool ‘n’ Quiet Technology
This motherboard supports the AMD Cool ‘n’ Quiet technology which
monitors system operation and automatically adjusts CPU voltage and
frequency for a cool and quiet operating environment.
Native DDR2 1066 support
This motherboard supports native DDR2 1066. It provides faster data
transfer rate and more bandwidth to increase memory computing
efficiency, enhancing system performance in 3D graphics and other
memory demanding applications.
•
•
DDR2 1066 is supported by AM3 / AM2+ CPU only. Refer to www.asus.com for the AM3
/ AM2+ CPU models.
Due to AM2+ / AM3 CPU limitation, only one DDR2 1066 DIMM is supported per
channel. When four DDR2 1066 DIMMs are installed, all DIMMs run at 800MHz
frequency by default for system stability.
Hybrid CrossFireX support
ATI Hybrid CrossFireX™ technology greatly boosts graphics performance
with an onboard GPU and a discrete graphics card.
•
•
Hybrid CrossFireX is supported by Windows® Vista OS only.
1-2
Chapter 1: Product introduction
64-bit CPU support
64-bit computing, the next generation technology that replaces the
current 32-bit architecture, delivers advanced system performance, faster
memory access, and increased productivity. This motherboard provides
excellent compatibility and flexibility by supporting both 64-bit and 32-bit
architecture.
Gigabit LAN solution
The onboard LAN controller is a highly integrated Gb LAN controller. It is
enhanced with an ACPI management function to provide efficient power
management for advanced operating systems.
Serial ATA 3Gb/s technology and SATA-On-The-Go
This motherboard supports hard drives based on the Serial ATA (SATA)
3Gb/s storage specification, delivering enhanced scalability and doubling
the bus bandwidth for high-speed data retrieval and save. The external
SATA port provides smart setup and hot-plug functions for easy data
backup to external devices.
8-channel high definition audio
The onboard 8-channel HD audio (High Definition Audio, previously
codenamed Azalia) CODEC enables high-quality 192KHz/24-bit audio
output and jack-detect feature that automatically detects and identifies
what types of peripherals are plugged into the audio I/O jacks and notifies
users of inappropriate connection, which means there will be no more
confusion of Line-in, Line-out, and Mic jacks.
1.3.2
Innovative ASUS features
ASUS Express Gate
ASUS Express Gate is an instant-on environment that gives you quick
access to the Internet. A few seconds after bootup, you can instantly surf
the Internet without entering the Windows® OS.
ASUS MyLogo2™
Turn your favorite photos into 256-color boot logos to personalize your
system.
ASUS CrashFree BIOS 3
ASUS CrashFree BIOS 3 is an auto-recovery tool that allows you to
restore a corrupted BIOS file using the bundled support DVD or a USB
flash disk that contains the BIOS file.
ASUS M4A78-EM
1-3
ASUS EZ Flash 2
ASUS EZ Flash 2 allows you to update the BIOS from a USB flash disk
before entering the OS.
ASUS Q-Fan
ASUS Q-Fan technology intelligently adjusts CPU fan speeds according
to system loading to ensure a quiet, cool, and efficient operation.
ASUS EPU
ASUS EPU is a unique power saving technology that detects the current
system loadings and adjusts the power consumption in real time.
ASUS AI Nap
With AI Nap, the system can keep running at minimum power and noise
when you are temporarily away. To wake the system and return to the OS
environment, simply click the mouse or press a key.
ASUS AI NET2
ASUS AI NET2 remotely detects the cable connection immediately after
you turn on the system and any faulty cable connections are reported
back up to 100 meters at 1 meter accuracy.
Green ASUS
This motherboard and its packaging comply with the European Union’s
Restriction on the use of Hazardous Substances (RoHS). This is in line
with the ASUS vision of creating environment-friendly and recyclable
products/packaging to safeguard consumers’ health while minimizing the
impact on the environment.
C.P.R. (CPU Parameter Recall)
The BIOS C.P.R. feature automatically restores the CPU default settings
when the system hangs due to overclocking failure. C.P.R. eliminates the
need to open the system chassis and clear the RTC data. Simply shut
down and reboot the system, and the BIOS automatically restores the
CPU parameters to their default settings.
1-4
Chapter 1: Product introduction
1.4
Before you proceed
Take note of the following precautions before you install motherboard components or change
any motherboard settings.
•
•
Unplug the power cord from the wall socket before touching any component.
Before handling components, use a grounded wrist strap or touch a safely grounded
object or a metal object, such as the power supply case, to avoid damaging them due to
static electricity.
•
•
Hold components by the edges to avoid touching the ICs on them.
Whenever you uninstall any component, place it on a grounded antistatic pad or in the
bag that came with the component.
•
Before you install or remove any component, switch off the ATX power supply and
detach its power cord. Failure to do so may cause severe damage to the motherboard,
peripherals, or components.
Onboard LED
The motherboard comes with a standby power LED that lights up to indicate that the system
is ON, in sleep mode, or in soft-off mode. This is a reminder that you should shut down
the system and unplug the power cable before removing or plugging in any motherboard
component. The illustration below shows the location of the onboard LED.
ASUS M4A78-EM
1-5
1.5
Motherboard overview
1.5.1
Placement direction
When installing the motherboard, ensure that you place it into the chassis in the correct
orientation. The edge with external ports goes to the rear part of the chassis as indicated in
the image below.
1.5.2
Screw holes
Place eight screws into the holes indicated by circles to secure the motherboard to the
chassis.
DO NOT overtighten the screws! Doing so can damage the motherboard.
Place this side towards
the rear of the chassis.
1-6
Chapter 1: Product introduction
1.5.3
Motherboard layout
1.5.4
Layout contents
Connectors/Jumpers/Slots/LED
Page Connectors/Jumpers/Slots/LED
Page
1. CPU, power, and chassis fan connectors
1-28 9. Chassis intrusion connector
1-21
(4-pin CPU_FAN, 3-pin PWR_FAN, and 3-pin CHA_FAN)
(4-1 pin CHASSIS)
2. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V) 1-22 10. Clear RTC RAM (3-pin CLRTC)
1-18
1-5
3. CPU Socket AM2+
4. DDR2 DIMM slots
1-8
11. Onboard LED (SB_PWR)
1-11
12. SATA connectors (7-pin SATA1, SATA2,
1-24
SATA3, SATA5, SATA6)
5. LPT connector (26-1 pin LPT)
1-23 13. USB connectors (10-1 pin USB78, USB910,
USB1112)
1-26
6. Serial port connector (10-1 pin COM1)
7. IDE connector (40-1 pin PRI_IDE)
1-24 14. Digital audio connector (4-1 pin SPDIF_OUT) 1-27
1-23 15. Front panel audio connector (10-1 pin AAFP)
1-27
1-26
8. System panel connector (20-8 pin PANEL)
1-25 16. Optical drive audio connector (4-pin CD)
ASUS M4A78-EM
1-7
1.6
Central Processing Unit (CPU)
This motherboard comes with an AM2+ / AM2 socket designed for AMD® Phenom™ x4 /
Phenom™ x3 / Athlon™ x2 / Athlon™ / Sempron™ processors. It also supports AM3 CPUs
including Phenom™ II / Athlon™ x4 / Athlon™ x3 / Athlon™ x2 processors.
The AM2+ / AM2 socket has a different pinout from the 940-pin socket designed for the
AMD Opteron™ processor. Use a CPU that is designed for the AM2+ / AM2 socket.
1.6.1
Installing the CPU
To install a CPU:
1.
Locate the CPU socket on the motherboard.
Socket lever
2.
Press the lever sideways to unlock the
socket, then lift it up to a 90°-100° angle.
Ensure that the socket lever is lifted up to a 90°-100° angle; otherwise, the CPU will not fit
in completely.
3.
Position the CPU above the socket such that the CPU
corner with the gold triangle matches the socket corner
with a small triangle.
4.
Carefully insert the CPU into the socket until it fits in place.
The CPU fits only in one correct orientation.
DO NOT force the CPU into the socket to
prevent bending the pins and damaging the
CPU!
Small triangle
Gold triangle
1-8
Chapter 1: Product introduction
5.
6.
When the CPU is in place, push down the socket
lever to secure the CPU. The lever clicks on the side
tab to indicate that it is locked.
Install a CPU heatsink and fan following the
instructions that comes with the heatsink package.
You can also refer to section 1.6.2 Installing
heatsink and fan for instructions.
7.
Connect the CPU fan cable to the CPU_FAN connector on the motherboard.
DO NOT forget to connect the CPU fan connector! Hardware monitoring errors can occur if
you fail to plug this connector.
ASUS M4A78-EM
1-9
1.6.2
Installing the heatsink and fan
Ensure that you use only AMD-certified heatsink and fan assembly.
To install the CPU heatsink and fan:
1.
Place the heatsink on top of the installed CPU, ensuring that the heatsink fits properly
on the retention module base.
•
•
The retention module base is already installed on the motherboard upon purchase.
You do not have to remove the retention module base when installing the CPU or
installing other motherboard components.
•
If you purchased a separate CPU heatsink and fan assembly, ensure that a Thermal
Interface Material is properly applied to the CPU heatsink or CPU before you install the
heatsink and fan assembly.
CPU Fan
CPU Heatsink
Retention bracket
Retention Module Base
Retention bracket lock
Your boxed CPU heatsink and fan assembly should come with installation instructions for
the CPU, heatsink, and the retention mechanism. If the instructions in this section do not
match the CPU documentation, follow the latter.
2.
Attach one end of the retention bracket to the retention module base.
1
2
4
3
5
1-10
Chapter 1: Product introduction
3.
Align the other end of the retention bracket to the retention module base. A clicking
sound denotes that the retention bracket is in place.
Ensure that the fan and heatsink assembly perfectly fits the retention mechanism module
base, otherwise you cannot snap the retention bracket in place.
4.
5.
Push down the retention bracket lock on the retention mechanism to secure the
heatsink and fan to the module base.
When the fan and heatsink assembly is in place, connect the CPU fan cable to the
connector on the motherboard labeled CPU_FAN.
DO NOT forget to connect the CPU fan connector! Hardware monitoring errors can occur if
you fail to plug this connector.
1.7
System memory
1.7.1
Overview
The motherboard comes with four Double Data Rate 2 (DDR2) Dual Inline Memory Modules
(DIMM) sockets. A DDR2 module has the same physical dimensions as a DDR DIMM but
has a 240-pin footprint compared to the 184-pin DDR DIMM. DDR2 DIMMs are notched
differently to prevent installation on a DDR DIMM socket. The figure illustrates the location of
the DDR2 DIMM sockets:
Channel
Sockets
Channel A
Channel B
DIMM_A1 and DIMM_A2
DIMM_B1 and DIMM_B2
ASUS M4A78-EM
1-11
1.7.2
Memory configurations
You may install 512MB, 1GB, 2GB, and 4GB unbuffered ECC and non-ECC DDR2 DIMMs
into the DIMM sockets.
•
You may install varying memory sizes in Channel A and Channel B. The system maps
the total size of the lower-sized channel for the dual-channel configuration. Any excess
memory from the higher-sized channel is then mapped for single-channel operation.
•
Always install DIMMs with the same CAS latency. For optimum compatibility, we
recommend that you obtain memory modules from the same vendor.
•
Due to the memory address limitation on 32-bit Windows® OS, when you install 4GB
or more memory on the motherboard, the actual usable memory for the OS can be
about 3GB or less. For effective use of memory, we recommend that you do any of the
following:
-
Install a maximum of 3GB system memory if you are using a 32-bit Windows®
OS.
-
Use a 64-bit Windows® OS if you want to install 4GB or more memory on the
motherboard.
•
This motherboard does not support DIMMs made up of 256 megabits (Mb) chips or less.
The motherboard supports up to 16GB memory modules on Windows® XP Professional x64
and Vista x64 editions. You may install a maximum of 4GB DIMMs on each slot.
M4A78-EM Motherboard Qualified Vendors Lists (QVL)
DDR2-1066MHz capability
DIMM
support
SS/
DS
Chip
Brand
Size
Vendor
Part No.
CL
Chip No.
A* B* C*
512MB
512MB
512MB
1G
Kingston
Kingston
Kingston
Kingston
Kingston
Kingston
KHX8500D2/512
SS N/A
SS N/A
SS N/A
DS N/A
DS N/A
DS N/A
Heat-Sink Package
E5108AJBG-1J-E
Heat-Sink Package
Heat-Sink Package
E5108AJBG-1J-E
Heat-Sink Package
Kingston
Elpida
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
KVR1066D2N7/512
KHX8500D2K2/1GN
KHX8500D2K2/2GN
KVR1066D2N7/1G
KHX8500D2/1G
Kingston
Kingston
Elpida
1G
1G
Kingston
1G
Qimonda HYS64T128020EU-19F-C DS
6
HYB18T512800CF19FFSS24313 Qimonda
1G
Kingmax
Crucial
KLED48F-A8K15
DS N/A
SS 5-5-5-15 Heat-Sink Package
KKA8FFIXF-JFS-18A
Kingmax
N/A
1G
BL12864AA1065.8FE5
1G
Transcend TX1066QLJ-2GK1GB
DS
SS
DS
5
5
5
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
GL2L128M88BA25AB
GL2L128M88BA25AB
Heat-Sink Package
Heat-Sink Package
Transced
Transced
Transced
OCZ
2G(kit of 2) Transcend TX1066QLU-2GK
2G
1G
1G
1G
1G
1G
Transcend TX1066QLU-4GK
OCZ
GEIL
GEIL
GEIL
GEIL
OCZ2N10662GK
DS N/A
GB22GB8500C5DC
GB24GB8500C5QC
GE22GB1066C5DC
GE24GB1066C5QC
F2-8500CL5D-2GBPK
F2-8500CL5S-1GBPK
SS
SS
SS
SS
5
5
5
5
GEIL
·
·
·
·
·
·
GEIL
GEIL
GEIL
2G(kit of 2) G.SKILL
1G G.SKILL
DS 5-5-5-15 Heat-Sink Package
DS 5-5-5-15 Heat-Sink Package
N/A
G.SKILL
1-12
Chapter 1: Product introduction
•
Due to AM2+ / AM3 CPU limitation, only one DDR2 1066 DIMM is supported per
channel. When four DDR2 1066 DIMMs are installed, all DIMMs run at 800Mhz
frequency by default for system stability.
•
The default DIMM frequency depends on its Serial Presence Detect (SPD), which is the
standard way of accessing information from a memory module. Under the default state,
some memory modules for overclocking may operate at a lower frequency than the
vendor-marked value.
DDR2-800MHz capability
DIMM support
SS/
DS
Chip
Brand
Size
Vendor
Part No.
CL
Chip No.
A* B*
C*
1G
Kingston
Kingston
Kingston
KHX6400D2LL/1G
KHX6400D2LLK2/1GN
KVR800D2N6/512
DS N/A Heat-Sink Package
SS N/A Heat-Sink Package
SS N/A E5108AJBG-8E-E
Kingston
Kingston
Elpida
·
·
·
·
·
·
·
·
·
512MB
512MB
D6408TR4CGL25USL362406
PECXA
1G
Kingston
KVR800D2N5/1G
DS N/A
Kingston
·
·
·
2G
Kingston
Kingston
Kingston
Kingston
Samsung
Samsung
Samsung
Samsung
Samsung
Samsung
Samsung
Qimonda
Micron
KVR800D2N5/2G
DS N/A E1108ACBG-8E-E
Elpida
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
2G
KHX6400D2/2G
DS N/A Heat-Sink Package
DS N/A E2108ABSE-8G-E
Kingston
Elpida
4G
KVR800D2N6/4G
512MB
512MB
1G
KVR800D2N5/512
SS N/A E5108AJBG-8E-E 0803A9082
Kingston
Samsung
Samsung
Samsung
Samsung
Samsung
Samsung
Samsung
M378T6553GZS-CF7
M378T2863QZS-CF7
M391T2863QZ3-CF7
M378T2953GZ3-CF7
M37875663QZ3-CF7
M391T5663QZ3-CF7
M378T5263AZ3-CF7
HYS64T64000EU-2.5-B2 SS
SS
SS
SS
DS
DS
DS
6
6
6
6
6
6
K4T51083QG-HCF7
K4T1G084QQ-HCF7
K4T1G084QQ-HCF7(ECC)
K4T51083QG-HCF7
1G
1G
2G
K4T1G084QQ-HCF7
K4T1G084QQ-HCF7(ECC)
2G
4G
DS N/A K4T2G084QA-HCF7
512MB
512MB
1G
6
5
6
5
4
5
HYB18T512800B2F25FSS28380 Qimonda
MT9HTF6472AY-80ED4
MT9HTF12872AY-800E1
SS
SS
6ED22D9GKX(ECC)
D9HNP 7YE22(ECC)
6TD22D9GKX(ECC)
Heat-Sink Package
Heat-Sink Package
Micron
Micron
Micron
Corsair
Corsair
Micron
1G
Micron
MT18HTF12872AY-80ED4 DS
1G
Corsair
XMS2-6400
XMS2-6400
DS
DS
1G
Corsair
4G(Kit
of 2)
Corsair
Corsair
Crucial
CM2X2048-6400C5DHX
CM2X2048-6400C5
DS
DS
5
5
Heat-Sink Package
Heat-Sink Package
Corsair
Corsair
N/A
·
·
·
·
·
·
·
·
·
4G(Kit
of 2)
2G(Kit of
2)(EPP)
BL12864AA804.8FE5
SS N/A Heat-Sink Package
512MB
1G
HY
HYMP564U64CP8-S5 AB SS
5
5
HY5PS12821CFP-S5
HY5PS12821CFPS5
Hynix
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
HY
HYMP512U64CP8-S5 AB DS
Hynix
512MB
1G
Kingmax
Kingmax
Kingmax
Apacer
Apacer
KLDC28F-A8KI5
KLDD48F-B8KB5
KLDE88F-B8KB5
78.01GA0.9K5
SS N/A KKA8FF1XF-JFS-25A
SS N/A KKB8FFBXF-CFA-25U
DS N/A KKB8FFBXF-CFA-25U
Kingmax
Kingmax
Kingmax
Apacer
2G
1G
SS
DS
SS
DS
DS
SS
5
5
5
5
5
5
AM4B5808CQJS8E0749D
AM4B5808CQJS8E0740E
7HD22 D9GMH
2G
78.A1GA0.9K4
Apacer
512MB
1G
Transcend TS64MLQ64V8J512MB
Transcend 505649-1993
Micron
7HD22D9GMH
Micron
1G
Transcend TS128MLQ64V8J
Transcend JM800QLU-1G
TQ123PJF8F0801
TQ1243PCF8
Transcend
Transcend
1G
(continued on the next page)
ASUS M4A78-EM
1-13
DDR2-800MHz capability
DIMM support
A* B*
SS/
DS
Chip
Brand
Size
Vendor
Part No.
CL
Chip No.
C*
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
1G
2G
2G
1G
512MB
2G
2G
2G
2G
1G
1G
1G
1G
1G
1G
1G
1G
1G
2G
2G
2G
2G
2G
2G
2G
1G
1G
2G
2G
4G
Transcend TS128MLQ64V8U
Transcend JM800QLU-2G
Transcend TS256MLQ64V8U
SS
DS
DS
5
5
5
E1108ACBG-8E-E
TQ243PCF8
Elpida
Transcend
Elpida
ADATA
VDATA
PSC
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
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·
·
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·
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·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
E1108ACBG-8E-E
ADATA
VDATA
PSC
M2OAD6G314170Q1E58 DS N/A AD29608A8A-25EG80810
M2GVD6G3H3160Q1E52 SS N/A VD29608A8A-25EG20813
AL8E8F73C-8E1
DS
DS
DS
DS
DS
DS
DS
DS
DS
DS
DS
DS
DS
DS
DS
DS
DS
DS
DS
DS
DS
DS
DS
DS
DS
5
5
5
5
4
4
5
5
5
4
4
4
5
5
5
5
5
4
4
5
4
4
5
4
5
5-5-
A3R1GE3CFF734MAA0E
SHG772-AA3G
PSC
PL8E8F73C-8E1
PSC
PSC
PL8E8G73E-8E1
XCP271A3G-A
PSC
PSC
AL7E8E63H-10E1K
GB22GB6400C4DC
GB24GB6400C4QC
GB22GB6400C5DC
GB24GB6400C5QC
GX22GB6400DC
A3R1GE3CFF750RABBP(ECC)
GL2L64M088BA30EB
GL2L64M088BA30EB
GL2L64M088BA30EB
GL2L64M088BA30EB
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
GL2L128M88BA25AB
GL2L128M88BA25AB
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
PSC
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GE22GB800C4DC
GE24GB800C4QC
GX22GB6400UDC
GE22GB800C5DC
GB24GB6400C5DC
GB28GB6400C5QC
GX24GB6400DC
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GE28GB800C5QC
GE28GB800C4QC
GE24GB800C4DC
GE24GB800C5DC
F2-6400CL4D-2GBPK
F2-6400CL4D-2GBHK
F2-6400CL5D-4GBPQ
F2-6400CL4D-4GBPK
F2-6400CL5Q-16GNQ
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
G.SKILL
G.SKILL
G.SKILL
G.SKILL
G.SKILL
G.SKILL
G.SKILL
G.SKILL
G.SKILL
G.SKILL
1G(Kit
of 2)
G.SKILL
F2-6400CL5D-1GBNQ
SS 5-
15
Heat-Sink Package
G.SKILL
·
·
·
1G
1G
1G
2G
1G
OCZ
OCZ
OCZ
OCZ
Elixir
OCZ2RPR8002GK
OCZ2G800R22GK
OCZ2P800R22GK
OCZ2P8004GK
DS
DS
DS
DS
DS
4
5
4
5
5
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
OCZ
OCZ
OCZ
OCZ
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
M2Y1G64TU8HB0B-25C
N2TU51280BE-25C802006Z1DV Elixir
M2Y1G64TU88D5B-AC
0828.GS
1G
Elixir
SS
5
N2TU16800E-AC Elixir
·
·
·
1-14
Chapter 1: Product introduction
DDR2-667MHz capability
DIMM
support
SS/
DS
Chip
Brand
Size
Vendor
Part No.
CL
Chip No.
A* B* C*
2G
Kingston
Kingston
Kingston
Kingston
KVR667D2N5/2G
KVR667D2N5/512
KVR667D2N5/2G
KVR667D2N5/1G
DS N/A
SS N/A
DS N/A
DS N/A
7RE22 D9HNL
Micron
·
·
·
·
·
·
·
·
·
·
·
·
SO1237650821 SBP D6408TR4CG
L25USL074905PECNB
512MB
2G
Kingston
Elpida
E1108ACBG-8E-E 0813A90CC
SO1280420822 SOP D6408TR4CG
L25USL156304PECXA
1G
Kingston
512MB
1G
Qimonda HYS64T64000EU-3S-B2
SS
5
5
HYB18T512B00B2F3SFSS28171
HYB18T512B00B2F3SFSS28171
MID095D62864M8CEC
Heat-Sink Package
Qimonda
Qimonda
Corsair
Corsair
Kingmax
Kingmax
Apacer
Apacer
Apacer
Apacer
Apacer
Apacer
Apacer
Elpida
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
·
Qimonda HYS64T128020EU-3S-B2 DS
1G
Corsair
Corsair
Kingmax
Kingmax
Apacer
Apacer
Apacer
Apacer
Apacer
Apacer
Apacer
VS1GB667D2
DS N/A
DS
1G
XMS2-5400
4
512MB
1G
KLCC28F-A8KB5
KLCD48F-A8KB5
AU512E667C5KBGC
AU512E667C5KBGC
78.91G92.9K5
SS N/A
KKEA88B4LAUG-29DX
KKEA88B4LAUG-29DX
AM4B5708MIJS7E0627B
AM4B5708GQJS7E06332F
AM4B5708JQJS7E0751C
AM4B5808CQJS7E0751C
AM4B5708GQJS7E0636B
AM4B5708MIJS7E0627B
AM4B5808CQJS7E0749B
E5108AJBG-6E-E
DS N/A
512MB
512MB
512MB
1G
SS
SS
SS
SS
5
5
5
5
78.01G9O.9K5
1G
AU01GE667C5KBGC
AU01GE667C5KBGC
78.A1G9O.9K4
DS N/A
1G
DS
DS
DS
5
5
5
2G
1G
Transcend 506010-4894
512MB
1G
ADATA
ADATA
ADATA
PSC
M2OAD5G3H3160Q1C52 SS N/A
AD29608A8A-3EG20813
AD29608A8A-3EG80814
AD20908A8A-3EG 30724
A3R12E3JFF717B9A00
A3R12E3JFF717B9A01
A3R1GE3CFF734MAA0J
NT5TU64M8AE-3C
ADATA
ADATA
ADATA
PSC
M2OAD5G314170Q1C58 DS N/A
2G
M2OAD5H3J4170I1C53
AL6E8E63J-6E1
DS N/A
512MB
1G
SS
DS
SS
5
5
5
PSC
AL7E8E63J-6E1
PSC
1G
PSC
AL7E8F73C-6E1
PSC
512MB
1G
Nanya
Nanya
GEIL
NT512T64U88A1BY-3C
NT1GT64U8HB0BY-3C
GX21GB5300SX
SS N/A
Nanya
Nanya
GEIL
DS
DS
DS
5
3
5
NT5TU64M8BE-3C72155700CP
Heat-Sink Package
1G
2G
GEIL
GX24GB5300LDC
F2-5400PHU2-2GBNT
F2-5300CL5D-4GBMQ
Heat-Sink Package
GEIL
2G(kit of 2) G.SKILL
DS 5-5-5-15 D2 64M8CCF 0815 C7173S
G.SKILL
G.SKILL
PSC
4G(kit of 2) G.SKILL
DS 5-5-5-15 Heat-Sink Package
512MB
4G
Twinmos 8D-A3JK5MPETP
SS
5
A3R12E3GEF633ACAOY
Samsung M378T5263AZ3-CE6
DS N/A
K4T2G084QA-HCE6
Samsung
ELIXIR
ELIXIR
Hynix
1G
ELIXIR
ELIXIR
M2Y1G64TU8HA2B-3C
M2Y1G64TU8HBOB-3C
DS
DS
5
5
M2TU51280AE-3C717095R28F
N2TU51280BE-3C639009W1CF
HY5PS12821CFP-Y5 C 702AA
1G
1G
Leadmax LRMP512U64A8-Y5
DS N/A
SS: Single-sided / DS: Double-sided
DIMM support:
•
•
A*: Supports one module inserted into any slot as single-channel memory configuration.
B*: Supports one pair of modules inserted into either the yellow slots or the black slots
as one pair of dual-channel memory configuration.
•
C*: Supports two pairs of modules inserted into both the yellow slots and the black slots
as two pairs of dual-channel memory configuration.
ASUS M4A78-EM
1-15
1.7.3
Installing a DIMM
Unplug the power supply before adding or removing DIMMs or other system components.
Failure to do so can cause severe damage to both the motherboard and the components.
2
1.
Press the retaining clips outward to
DDR2 DIMM notch
unlock a DDR2 DIMM socket.
2.
Align a DIMM on the socket such that
the notch on the DIMM matches the
break on the socket.
1
1
Unlocked retaining clip
A DDR2 DIMM is keyed with a notch so that it fits in only one direction. DO NOT force a
DIMM into a socket to avoid damaging the DIMM.
3.
Firmly insert the DIMM into the socket
until the retaining clips snap back in place
and the DIMM is properly seated.
3
Locked Retaining Clip
1.7.4
Removing a DIMM
To remove a DIMM:
1.
Simultaneously press the retaining clips
outward to unlock the DIMM.
2
Support the DIMM lightly with your
fingers when pressing the retaining
clips. The DIMM might get damaged
when it flips out with extra force.
1
1
DDR2 DIMM notch
2.
Remove the DIMM from the socket.
1-16
Chapter 1: Product introduction
1.8
Expansion slots
In the future, you may need to install expansion cards. The following sub-sections describe
the slots and the expansion cards that they support.
Unplug the power cord before adding or removing expansion cards. Failure to do so may
cause you physical injury and damage motherboard components.
1.8.1
Installing an expansion card
To install an expansion card:
1.
Before installing the expansion card, read the documentation that came with it and
make the necessary hardware settings for the card.
2.
Remove the system unit cover (if your motherboard is already installed in a chassis).
3.
Remove the bracket opposite the slot that you intend to use. Keep the screw for later
use.
4.
Align the card connector with the slot and press firmly until the card is completely
seated on the slot.
5.
6.
Secure the card to the chassis with the screw you removed earlier.
Replace the system cover.
1.8.2
Configuring an expansion card
After installing the expansion card, configure it by adjusting the software settings.
1.
Turn on the system and change the necessary BIOS settings, if any. See Chapter 2 for
information on BIOS setup.
2.
Assign an IRQ to the card.
3.
Install the software drivers for the expansion card.
When using PCI cards on shared slots, ensure that the drivers support “Share IRQ” or that
the cards do not need IRQ assignments. Otherwise, conflicts will arise between the two PCI
groups, making the system unstable and the card inoperable.
1.8.3
PCI slots
The PCI slots support cards such as a LAN card, SCSI card, USB card, and other cards that
comply with PCI specifications.
1.8.4
PCI Express x1 slot
This motherboard supports PCI Express x1 network cards, SCSI cards, and other cards that
comply with the PCI Express specifications.
1.8.5
PCI Express x16 slot
This motherboard supports a PCI Express x16 graphics card that complies with the PCI
Express specifications.
ASUS M4A78-EM
1-17
1.9
Jumpers
1.
Clear RTC RAM (CLRTC)
This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS. You can
clear the CMOS memory of date, time, and system setup parameters by erasing
the CMOS RTC RAM data. The onboard button cell battery powers the RAM data in
CMOS, which include system setup information such as system passwords.
To erase the RTC RAM:
1. Turn OFF the computer and unplug the power cord.
2. Move the jumper cap from pins 1-2 (default) to pins 2-3. Keep the cap on pins 2-3
for about 5~10 seconds, then move the cap back to pins 1-2.
3. Plug the power cord and turn ON the computer.
4. Hold down the <Del> key during the boot process and enter BIOS setup to reenter
data.
Except when clearing the RTC RAM, never remove the cap on CLRTC jumper default
position. Removing the cap will cause system boot failure!
•
•
If the steps above do not help, remove the onboard battery and move the jumper again
to clear the CMOS RTC RAM data. After clearing the CMOS, reinstall the battery.
You do not need to clear the RTC when the system hangs due to overclocking. For
system failure due to overclocking, use the CPU Parameter Recall (C.P.R) feature. Shut
down and reboot the system so the BIOS can automatically reset parameter settings to
default values.
1-18
Chapter 1: Product introduction
1.10
Connectors
1.10.1
Rear panel ports
1.
2.
PS/2 Keyboard/Mouse Combo port (purple). This port is for a PS/2 keyboard or
mouse.
Optical S/PDIF_OUT port. This port connects to an external audio output device via
an optical S/PDIF cable.
3.
4.
VGA port. This 15-pin port is for a VGA monitor or other VGA-compatible devices.
USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports are for USB
2.0 devices.
5.
LAN (RJ-45) port. This port allows Gigabit connection to a Local Area Network (LAN)
through a network hub.
LAN port LED indications
ACT/LINK SPEED
LED LED
Activity/Link LED
Speed LED
Status
Status
Description
No link
Description
OFF
OFF
10Mbps connection
100Mbps connection
1Gbps connection
ORANGE
BLINKING
Linked
ORANGE
GREEN
Data activity
LAN port
6.
7.
8.
9.
Center/Subwoofer port (orange). This port connects to the center/subwoofer
speakers.
Rear Speaker Out port (black). This port connects to the rear speakers in the
4, 6, and 8-channel audio configurations.
Line In port (light blue). This port connects to the tape, CD, DVD player, or other
audio sources.
Line Out port (lime). This port connects to a headphone or a speaker. In the 4, 6 and
8-channel configurations, the function of this port becomes Front Speaker Out.
10. Microphone port (pink). This port connects to a microphone.
11. Side Speaker Out port (gray). This port connects to the side speakers in the
8-channel audio configuration.
Refer to the audio configuration table on the next page for the function of the audio ports in
the 2, 4, 6, or 8-channel configuration.
ASUS M4A78-EM
1-19
Audio 2, 4, 6, or 8-channel configuration
Headset
2-channel
Port
4-channel
6-channel
8-channel
Light Blue
Lime
Line In
Line In
Line In
Front Speaker Out
Mic In
Line In
Line Out
Front Speaker Out
Front Speaker Out
Mic In
Pink
Mic In
Mic In
Orange
Black
–
–
–
–
Center/Subwoofer
Rear Speaker Out
–
Center/Subwoofer
Rear Speaker Out
Side Speaker Out
Rear Speaker Out
–
Gray
Ensure the audio device of sound playback is Realtek High Definition Audio (the name
may be different based on the OS). Go to Start > Control Panel > Sounds and Audio
Devices > Sound Playback to configure the settings.
12. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports are for
USB 2.0 devices.
13. eSATA port. This port connects to an external Serial ATA hard disk drive.
To use hot-plug, set the OnChip SATA Type item in the BIOS to [AHCI]. See section 2.3.4
SATA Configuration for details.
14. DVI-D Out port. This port is for any DVI-D compatible device and is HDCP compliant
allowing playback of HD DVD, Blu-Ray, and other protected content.
15. HDMI port. This port is for a High-Definition Multimedia Interface (HDMI) connector,
and is HDCP compliant allowing playback of HD DVD, Blu-Ray, and other protected
content.
Dual display output support
•
This table indicates that whether the following dual display outputs are supported on
your motherboard:
Dual display outputs
Supported
Not supported
DVI + D-Sub
DVI + HDMI
•
•
HDMI + D-Sub
•
•
During POST, only the monitor connected to the D-Sub port has display. The dual
display function works only under Windows.
1-20
Chapter 1: Product introduction
Playback of HD DVD and Blu-Ray discs
•
For better playback quality, we recommend that you follow the system requirements
listed below.
Suggested list
CPU
DIMM
AMD® Athlon 4400+
DDR2 800 (1GB or higher)
BIOS setup
Frame Buffer Size--256MB or higher
Best resolution
File format
Windows XP
1920 x 1080p
1920 x 1080p
1280 x 1080p
Windows Vista
Non-protected clips
HD-DVD
1920 x 1080p
1280 x 1080p
1280 x 1080p
Blu-Ray
•
To play HD DVD or Blu-Ray disc, ensure to use HDCP compliant devices and software.
16. USB 2.0 ports 5 and 6. These two 4-pin Universal Serial Bus (USB) ports are for
USB 2.0 devices.
1.10.2
Internal connectors
1.
Chassis intrusion connector (4-1 pin CHASSIS)
This connector is for a chassis-mounted intrusion detection sensor or switch. Connect
one end of the chassis intrusion sensor or switch cable to this connector. The chassis
intrusion sensor or switch sends a high-level signal to this connector when a chassis
component is removed or replaced. The signal is then generated as a chassis intrusion
event.
By default, the pins labeled “Chassis Signal” and “GND” are shorted with a jumper cap.
Remove the jumper caps only when you intend to use the chassis intrusion detection
feature.
ASUS M4A78-EM
1-21
2.
ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)
These connectors are for an ATX power supply. The plugs from the power supply are
designed to fit these connectors in only one orientation. Find the proper orientation and
push down firmly until the connectors completely fit.
•
•
We recommend that you use an ATX 12V Specification 2.0-compliant power supply unit
(PSU) with a minimum of 300W power rating. This PSU type has 24-pin and 4-pin power
plugs.
If you intend to use a PSU with 20-pin and 4-pin power plugs, ensure that the 20-pin
power plug can provide at least 15 A on +12 V and that the PSU has a minimum power
rating of 300W. The system may become unstable or may not boot up if the power is
inadequate.
•
DO NOT forget to connect the 4-pin ATX +12V power plug. Otherwise, the system will
not boot up.
•
We recommend that you use a PSU with higher power output when configuring a
system with more power-consuming devices or when you intend to install additional
devices. The system may become unstable or may not boot up if the power is
inadequate.
•
If you are uncertain about the minimum power supply requirement for your system,
refer to the Recommended Power Supply Wattage Calculator at http://support.asus.
com/PowerSupplyCalculator/PSCalculator.aspx?SLanguage=en-us for details.
1-22
Chapter 1: Product introduction
3.
IDE connector (40-1 pin PRI_IDE)
The onboard IDE connector is for Ultra DMA 133/100/66 signal cable. There are three
connectors on each Ultra DMA 133/100/66 signal cable: blue, black, and gray. Connect
the blue connector to the motherboard’s IDE connector, then select one of the following
modes to configure your devices:
Drive jumper setting
Mode of device(s)
Cable connector
Black
Single device
Two devices
Cable-Select or Master
-
Master
Slave
Master
Slave
Black
Cable-Select
Gray
Master
Slave
Black or gray
•
•
Pin 20 on the IDE connector is removed to match the covered hole on the Ultra DMA
cable connector. This prevents incorrect insertion when you connect the IDE cable.
Use the 80-conductor IDE cable for Ultra DMA 133/100/66 IDE devices.
If any device jumper is set as “Cable-Select”, ensure that all other device jumpers have the
same setting.
4.
LPT connector
The LPT (Line Printing Terminal) connector supports devices such as a printer. LPT is
standardized as IEEE 1284, which is the parallel port interface on IBM PC-compatible
computers.
ASUS M4A78-EM
1-23
5.
Serial ATA connectors (7-pin SATA1, SATA2, SATA3, SATA5, and SATA6)
These connectors are for the Serial ATA signal cables for Serial ATA 3Gb/s hard disk
and optical disk drives. The Serial ATA 3Gb/s is backward compatible with Serial ATA
1.5Gb/s specification. The data transfer rate of the Serial ATA 3Gb/s is faster than the
standard parallel ATA with 133 MB/s (Ultra DMA133). If you install Serial ATA hard disk
drives, you can create a RAID 0, RAID 1, and RAID 0+1 configurations through the
onboard SB700 chipset.
Install the Windows® XP Service Pack 1 before using Serial ATA.
•
For detailed instructions on RAID configurations, refer to the RAID manual in the
Support DVD.
•
If you intend to create a Serial ATA RAID set using these connectors, set the OnChip
SATA Type item in the BIOS to [RAID]. See 2.3.4 SATA Configuration for details.
6.
Serial port connector (10-1 pin COM1)
The connector is for a serial (COM) port. Connect the serial port module cable to the
connector, then install the module to a slot opening at the back of the system chassis.
The serial port bracket (COM1) is purchased separately.
1-24
Chapter 1: Product introduction
7.
System panel connector (20-8 pin F_PANEL)
This connector supports several chassis-mounted functions.
•
System power LED
This 2-pin connector is for the system power LED. Connect the chassis power LED
cable to this connector. The system power LED lights up when you turn on the system
power, and blinks when the system is in sleep mode.
•
Hard disk drive activity LED
This 2-pin connector is for the HDD Activity LED. Connect the HDD Activity LED cable
to this connector. The IDE LED lights up or flashes when data is read from or written to
the HDD.
•
•
System warning speaker
This 4-pin connector is for the chassis-mounted system warning speaker. The speaker
allows you to hear system beeps and warnings.
Power/Soft-off button
This 2-pin connector is for the system power button. Pressing the power button turns
the system ON or puts the system in SLEEP or SOFT-OFF mode depending on the
BIOS settings. Pressing the power switch for more than four seconds while the system
is ON turns the system OFF.
•
Reset button
This 2-pin connector is for the chassis-mounted reset button for system reboot without
turning off the system power.
ASUS M4A78-EM
1-25
8.
USB connectors (10-1 pin USB78, USB910, USB1112)
These connectors are for USB 2.0 ports. Connect the USB module cable to any of
these connectors, then install the module to a slot opening at the back of the system
chassis. These USB connectors comply with USB 2.0 specification that supports up to
480Mbps connection speed.
Never connect a 1394 cable to the USB connectors. Doing so will damage the
motherboard!
The USB 2.0 module is purchased separately.
9.
Optical drive audio in connector (4-pin CD)
This connector allows you to receive stereo audio input from sound sources such as a
CD-ROM, TV tuner, or MPEG card.
1-26
Chapter 1: Product introduction
10. Digital audio connector (4-1 pin SPDIF_OUT)
This connector is for an additional Sony/Philips Digital Interface (S/PDIF) ports.
Ensure that the audio device of Sound playback is Realtek High Definition Audio (the
name may be different based on the OS). Go to Start > Control Panel > Sounds and
Audio Devices > Sound Playback to configure the setting.
The S/PDIF module is purchased separately.
11. Front panel audio connector (10-1 pin AAFP)
This connector is for a chassis-mounted front panel audio I/O module that supports
either High Definition Audio or AC`97 audio standard. Connect one end of the front
panel audio I/O module cable to this connector.
•
•
We recommend that you connect a high-definition front panel audio module to this
connector to avail of the motherboard high-definition audio capability.
If you want to connect a high definition front panel audio module to this connector, set
the Front Panel Select item in the BIOS to [HD Audio]. See section 2.4.4 Onboard
Device Configuration for details.
ASUS M4A78-EM
1-27
12. Power, CPU, and chassis fan connectors (3-pin PWR_FAN, 4-pin CPU_FAN,
3-pin CHA_FAN)
The fan connectors support cooling fans of 350mA~740mA (8.88W max.) or a total of
1A~2.22A (26.64W max.) at +12V. Connect the fan cables to the fan connectors on the
motherboard, ensuring that the black wire of each cable matches the ground pin of the
connector.
DO NOT forget to connect the fan cables to the fan connectors. Insufficient air flow inside
the system may damage the motherboard components. These are not jumpers! DO NOT
place jumper caps on the fan connectors.
Only the CPU fan supports the ASUS Q-Fan feature.
1-28
Chapter 1: Product introduction
1.11
Software support
1.11.1
Installing an operating system
This motherboard supports Windows® XP/Vista Operating Systems (OS). Always install the
latest OS version and corresponding updates to maximize the features of your hardware.
•
•
Motherboard settings and hardware options vary. Refer to your OS documentation for
detailed information.
Ensure that you install Windows® XP Service Pack 3 or later versions / Windows® Vista
Service Pack 1 or later versions before installing the drivers for better compatibility and
system stability.
1.11.2
Support DVD information
The Support DVD that comes with the motherboard package contains the drivers, software
applications, and utilities that you can install to avail all motherboard features.
The contents of the Support DVD are subject to change at any time without notice. Visit the
To run the Support DVD
Place the Support DVD into the optical drive. The DVD automatically displays the Drivers
menu if Autorun is enabled on your computer.
Click an icon to
display Support DVD/
motherboard information
Click an item to install
If Autorun is NOT enabled on your computer, browse the contents of the Support DVD to
locate the file ASSETUP.EXE from the BIN folder. Double-click the ASSETUP.EXE to run
the DVD.
ASUS M4A78-EM
1-29
1-30
Chapter 1: Product introduction
Chapter 2
BIOS information
2.1
Managing and updating your BIOS
Save a copy of the original motherboard BIOS file to a USB flash disk in case you need to
restore the BIOS in the future. Copy the original motherboard BIOS using the ASUS Update
or AFUDOS utilities.
2.1.1
ASUS Update utility
The ASUS Update is a utility that allows you to manage, save, and update the motherboard
BIOS in Windows® environment.
•
•
ASUS Update requires an Internet connection either through a network or an Internet
Service Provider (ISP).
This utility is available in the support DVD that comes with the motherboard package.
Installing ASUS Update
To install ASUS Update:
1.
2.
3.
Place the support DVD into the optical drive. The Drivers menu appears.
Click the Utilities tab, then click ASUS Update.
Follow the onscreen instructions to complete the installation.
Quit all Windows® applications before you update the BIOS using this utility.
ASUS M4A78-EM
2-1
Updating the BIOS
To update the BIOS:
1.
From the Windows® desktop, click Start > Programs > ASUS > ASUS Update >
ASUS Update to launch the ASUS Update utility.
2.
From the dropdown list, select either of the following methods:
Updating from the Internet
a. Select Update BIOS from the Internet, then click Next.
b. Select the ASUS FTP site nearest you to avoid network traffic, or click Auto
Select then click Next.
c. From the FTP site, select the BIOS version that you want to download then click
Next.
The ASUS Update utility is capable of updating itself through the Internet. Always update
the utility to avail all its features.
Updating from a BIOS file
a. Select Update BIOS from a file, then click Next.
b. Locate the BIOS file from the Open window, then click Open.
3.
Follow the onscreen instructions to complete the updating process.
2-2
Chapter 2: BIOS information
2.1.2
ASUS EZ Flash 2 utility
The ASUS EZ Flash 2 feature allows you to update the BIOS without using an OS-based
utility.
Before you start using this utility, download the latest BIOS file from the ASUS website at
To update the BIOS using EZ Flash 2:
1.
Insert the USB flash disk that contains the latest BIOS file to the USB port, then launch
EZ Flash 2 in either of these two ways:
•
Press <Alt> + <F2> during POST to display the following:
ASUSTek EZ Flash 2 BIOS ROM Utility V3.21
FLASH TYPE: MXIC 25L8005
Current ROM
BOARD: M4A78-EM
VER: 0304 (H:00 B:06)
DATE: 01/19/2009
Update ROM
BOARD: Unknown
VER: Unknown
DATE: Unknown
PATH: C:\
C:
Note
[Enter] Select or Load [Tab] Switch
[Up/Down/Home/End] Move [B] Backup
[V] Drive Info
[ESC] Exit
•
Enter the BIOS setup program. Go to the Tools menu to select EZ Flash 2 and
press <Enter> to enable it.
2.
Press <Tab> to switch between drives until the correct BIOS file is found, then press
<Enter>. EZ Flash 2 performs the BIOS updating process and automatically reboots
the system when done.
•
This function supports USB flash disks with FAT 32/16 format and single partition only.
•
DO NOT shut down or reset the system while updating the BIOS to prevent system boot
failure!
ASUS M4A78-EM
2-3
2.1.3
ASUS CrashFree BIOS 3 utility
The ASUS CrashFree BIOS 3 is an auto recovery tool that allows you to restore the BIOS file
when it fails or gets corrupted during the updating process. You can update a corrupted BIOS
file using the motherboard support DVD or a USB flash disk that contains the updated BIOS
file.
•
•
Prepare the motherboard support DVD or the USB flash disk containing the updated
motherboard BIOS before using this utility.
Always connect the SATA cable to the SATA1/2/3/5/6 connector. Otherwise, the utility
will not function.
Recovering the BIOS
To recover the BIOS:
1.
Turn on the system.
2.
Insert the support DVD or the USB flash disk containing the BIOS file to the optical
drive or USB port.
The utility displays the following message and automatically checks the support DVD
or USB flash disk for the BIOS file.
Bad BIOS checksum. Starting BIOS recovery...
Checking for CD-ROM...
When the BIOS file is found, the utility reads it and starts erasing the corrupted BIOS
file.
Bad BIOS checksum. Starting BIOS recovery...
Checking for CD-ROM...
CD-ROM found!
Reading file “M4A78EM.ROM”. Completed.
Start erasing...
Start programming...
3.
Restart the system after the utility completes the updating process.
•
Only the USB flash disk with FAT 32/16 format and single partition supports ASUS
CrashFree BIOS 3. The device size should be smaller than 8GB.
•
DO NOT shut down or reset the system while updating the BIOS! Doing so can cause
system boot failure!
The recovered BIOS may not be the latest BIOS version for this motherboard. Download
the latest BIOS file from the ASUS website at www.asus.com.
2-4
Chapter 2: BIOS information
2.2
BIOS setup program
This motherboard supports a programmable Serial Peripheral Interface (SPI) chip that you
can update using the provided utility described in section 2.1 Managing and updating your
BIOS.
Use the BIOS Setup program when you are installing a motherboard, reconfiguring your
system, or prompted to “Run Setup.” This section explains how to configure your system
using this utility.
Even if you are not prompted to use the Setup program, you can change the configuration of
your computer in the future. For example, you can enable the security password feature or
change the power management settings. This requires you to reconfigure your system using
the BIOS Setup program so that the computer can recognize these changes and record them
in the CMOS RAM of the SPI chip.
The SPI chip on the motherboard stores the Setup utility. When you start up the computer,
the system provides you with the opportunity to run this program. Press <Del> during the
Power-On Self-Test (POST) to enter the Setup utility; otherwise, POST continues with its test
routines.
If you want to enter Setup after POST, reboot the system by doing any of the following
procedures:
•
•
•
•
Restart using the OS standard shut-down procedure.
Press <Ctrl>+<Alt>+<Del> simultaneously.
Press the reset button on the system chassis.
Press the power button to turn the system off then back on.
Using the power button, reset button, or the <Ctrl>+<Alt>+<Del> keys to force
reset from a running operating system can cause damage to your data or system. We
recommend that you always shut down the system properly from the operating system.
The Setup program is designed to make it as easy to use as possible. Being a menu-driven
program, it lets you scroll through the various sub-menus and make your selections from the
available options using the navigation keys.
•
The default BIOS settings for this motherboard apply to most conditions to ensure
optimum performance. If the system becomes unstable after changing any BIOS
settings, load the default settings to ensure system compatibility and stability. Select the
Load Setup Defaults item under the Exit menu. See section 2.8 Exit Menu.
•
•
The BIOS setup screens in this chapter are for reference only. They may not exactly
match what you see on your screen.
Visit the ASUS website at www.asus.com to download the latest BIOS file for this
motherboard.
ASUS M4A78-EM
2-5
2.2.1
BIOS menu screen
Menu items
Menu bar
Power
Configuration fields
General help
BIOS SETUP UTILITY
Main Advanced
Boot
Tools
Exit
Main Settings
Use [ENTER], [TAB]
or [SHIFT-TAB] to
select a field.
System Time
System Date
[19:34:30]
[Tue 11/19/2007]
Primary IDE Master
Primary IDE Slave
SATA1
:[Not Detected]
:[Not Detected]
:[Not Detected]
:[Not Detected]
:[Not Detected]
:[Not Detected]
:[Not Detected]
:[Not Detected]
Use [+] or [-] to
configure system
Time.
SATA2
SATA3
SATA5
SATA6
E-SATA
SATA Configuration
Select Screen
Select Item
Change Field
+-
System Information
Tab
F1
Select Field
General Help
Save and Exit
Exit
F10
ESC
v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.
Navigation keys
Submenu items
2.2.2
Menu bar
The menu bar on top of the screen has the following main items:
Main
For changing the basic system configuration
Advanced
Power
Boot
For changing the advanced system settings
For changing the advanced power management (APM) configuration
For changing the system boot configuration
Tools
Exit
For configuring options for special functions
For selecting the exit options and loading default settings.
To select an item on the menu bar, press the right or left arrow key on the keyboard until the
desired item is highlighted.
2.2.3
Navigation keys
At the bottom right corner of a menu screen are the navigation keys for that particular menu.
Use the navigation keys to select items in the menu and change the settings.
Some of the navigation keys differ from one screen to another.
2-6
Chapter 2: BIOS information
2.2.4
Menu items
The highlighted item on the menu bar displays the specific items for that menu. For example,
selecting Main shows the Main menu items.
The other items (Advanced, Power, Boot, Tools, and Exit) on the menu bar have their
respective menu items.
2.2.5
Submenu items
A solid triangle before each item on a menu screen means that the item has a submenu. To
display the submenu, select the item and press <Enter>.
2.2.6
Configuration fields
These fields show the values for the menu items. If an item is user- configurable, you can
change the value of the field opposite the item. You cannot select an item that is not
user-configurable.
A configurable field is enclosed in brackets, and is highlighted when selected. To change the
value of a field, select it then press <Enter> to display a list of options. Refer to 2.2.7 Pop-up
window.
BIOS SETUP UTILITY
Advanced
2.2.7
Pop-up window
CPU Configuration
Sets the ratio
between CPU Core
Clock and the FSB
Frequency.
NOTE: If an invalid
ratio is set in CMOS
then actual and
setpoint values may
differ.
Module Version: 13.40
AGESA Version: 3.3.1.0
Select a menu item then press <Enter>
to display a pop-up window with the
configuration options for that item.
AMD Sempron(tm) Processor 3200+
Revision: F2
Cache L1: :128KB
Cache L2
Cache L3
:128KB
N/A:
Options
Disabled
Enabled
Speed: 1800MHz
HT Frequency: 800MHz
Current FSB Multiplier: 9x
Maximum FSB Multiplier: 9x
Able to Change Freq.: Yes
uCode Patch Level: 0x62
Select Screen
Select Item
F1
General Help
GART Error Reporting
Microcode Updation
[Disabled]
[Enabled]
2.2.8
Scroll bar
F10 Save and Exit
ESC Exit
Secure Virtual Machine Mode [Enabled]
Cool ‘n‘ Quiet
CPU Prefetching
[Enalbed]
[Enabled]
A scroll bar appears on the right side of
a menu screen when there are items that
do not fit on the screen. Press the <Up> /
<Down> arrow keys or <Page Up> /<Page
Down> keys to display the other items on
the screen.
v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.
Pop-up window
Scroll bar
2.2.9
General help
At the top right corner of the menu screen is a brief description of the selected item.
ASUS M4A78-EM
2-7
2.3
Main menu
When you enter the BIOS Setup program, the Main menu screen appears, giving you an
overview of the basic system information.
Refer to section 2.2.1 BIOS menu screen for information on the menu screen items and
how to navigate through them.
BIOS SETUP UTILITY
Main
Advanced
Power
Boot
Tools
Exit
Main Settings
Use [ENTER], [TAB]
or [SHIFT-TAB] to
select a field.
System Time
System Date
[19:34:30]
[Tue 11/19/2007]
Primary IDE Master
Primary IDE Slave
SATA1
:[Not Detected]
:[Not Detected]
:[Not Detected]
:[Not Detected]
:[Not Detected]
:[Not Detected]
:[Not Detected]
:[Not Detected]
Use [+] or [-] to
configure system
Time.
SATA2
SATA3
SATA5
SATA6
E-SATA
SATA Configuration
Select Screen
Select Item
Change Field
+-
System Information
Tab
F1
Select Field
General Help
Save and Exit
Exit
F10
ESC
v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.
2.3.1
System Time [xx:xx:xx]
Allows you to set the system time.
2.3.2
System Date [Day xx/xx/xxxx]
Allows you to set the system date.
2.3.3
Primary IDE Master/Slave, SATA 1/2/3/5/6, E-SATA
While entering Setup, the BIOS automatically detects the presence of IDE/SATA devices.
There is a separate submenu for each IDE/SATA device. Select a device item then press
<Enter> to display the IDE/SATA device information.
The BIOS automatically detects the values opposite the dimmed items (Device, Vendor, Size,
LBA Mode, Block Mode, PIO Mode, Async DMA, Ultra DMA, and SMART monitoring). These
values are not user-configurable. These items show Not Detected if no IDE/SATA device is
installed in the system.
Type [Auto]
Selects the type of IDE drive. Setting this item to [Auto] allows automatic selection of the
appropriate IDE device type. Select [CDROM] if you are specifically configuring a CD-ROM
drive. Select [ARMD] (ATAPI Removable Media Device) if your device is either a ZIP, LS-120,
or MO drive. Configuration options: [Not Installed] [Auto] [CDROM] [ARMD]
This item only appears in the Primary IDE Master/Slave menus.
2-8
Chapter 2: BIOS information
LBA/Large Mode [Auto]
Enables or disables the LBA mode. Setting this item to [Auto] enables the LBA mode if the
device supports this mode, and if the device was not previously formatted with LBA mode
disabled. Configuration options: [Disabled] [Auto]
Block (Multi-Sector Transfer) M [Auto]
Enables or disables data multi-sectors transfers. When this item is set to [Auto], the data
transfer from and to the device occurs multiple sectors at a time if the device supports multi-
sector transfer feature. When this item is set to [Disabled], the data transfer from and to the
device occurs one sector at a time. Configuration options: [Disabled] [Auto]
PIO Mode [Auto]
Selects the PIO mode. Configuration options: [Auto] [0] [1] [2] [3] [4]
DMA Mode [Auto]
Selects the DMA mode. Configuration options: [Auto]
SMART Monitoring [Auto]
Sets the Smart Monitoring, Analysis, and Reporting Technology.
Configuration options: [Auto] [Disabled] [Enabled]
32Bit Data Transfer [Enabled]
Enables or disables 32-bit data transfer. Configuration options: [Disabled] [Enabled]
2.3.4
SATA Configuration
The Storage Configuration menu allows you to configure your storage devices. Select an
item then press <Enter> to display the submenu.
OnChip SATA Channel [Enabled]
Enables or disables OnChip SATA Channel. Configuration options: [Disabled] [Enabled]
OnChip SATA Type [SATA]
This item appears only when you set the OnChip SATA Channel item to [Enabled]. Allows you
to set the OnChip SATA Type. Configuration options: [SATA] [RAID] [AHCI]
If you want to boot the system from a hard disk drive included in a created RAID set, copy
the RAID driver from the Support DVD to a USB flash disk before you install an operating
system to the selected hard disk drive.
2.3.5
System Information
This menu gives you an overview of the general system specifications. The BIOS
automatically detects the items in this menu.
BIOS Information
Displays the auto-detected BIOS information.
Processor
Displays the auto-detected CPU specification.
System Memory
Displays the auto-detected system memory.
ASUS M4A78-EM
2-9
2.4
Advanced menu
The Advanced menu items allow you to change the settings for the CPU and other system
devices.
Take caution when changing the settings of the Advanced menu items. Incorrect field
values can cause the system to malfunction.
BIOS SETUP UTILITY
Main
Advanced
Power
Boot
Tools
Exit
Advanced Settings
Adjust System
Frequency/Voltage etc.
JumperFree Configuration
CPU Configuration
Chipset
Onboard Devices Configuration
PCIPnP
USB Configuration
Select Screen
Select Item
+-
Change Field
Tab Select Field
F1
General Help
F10 Save and Exit
ESC Exit
v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.
2.4.1
JumperFree Configuration
CPU Overclocking [Auto]
Allows selection of CPU overclocking options to achieve desired CPU internal frequency.
Select either one of the preset overclocking. Configuration options: [Auto] [Manual]
[Overclock Profile] [Test Mode]
GPU Overclocking [Auto]
Allows you to configure overclocking of GPU. Configuration options: [Auto] [Manual]
PCIE Overclocking [Auto]
Allows you to to configure overclocking of PCIE. Configuration options: [Auto] [Manual]
Processor Frequency Multiplier [Auto]
Allows you to set the processor frequency multiplier. Configuration options: [Auto]
[x4.0 800MHz] [x5.0 1000MHz] [x6.0 1200MHz] [x7.0 1400MHz] [x8.0 1600MHz]
[x9.0 1800MHz]
CPU Over Voltage [Auto]
Allows you to set the CPU over voltage. Configuration options: [Auto] [+33mv] [+66mv]
[+99mv]
VDDNB Over Voltage [Auto]
Allows you to set the VDDNB over voltage. Configuration options: [Auto] [+12.5mv] [+25mv]
[+50mv]
Hyper Transport Speed [Auto]
Allows you to set the HyperTransport link speed. Configuration options: [200MHz] [400MHz]
[600MHz] [800 MHZ] [1GHz] [Auto]
2-10
Chapter 2: BIOS information
Hyper Transport Width [Auto]
Allows you to set the HyperTransport link width. Configuration options: [Auto] [4 Bit] [8 Bit]
[16 Bit]
Memory Clock Mode [Auto]
Allows you to set the memory clock mode. Configuration options: [Auto] [Manual]
DRAM Timing Mode [Auto]
Allows you to set the DRAM timing mode. Configuration options: [Auto] [DCT 0]
Memory Over Voltage [Auto]
Allows you to set the memory over voltage. The values range from 1.85000V to 2.24375V
with a 0.00625V increment. Use the <+> / <-> keys to adjust the value. Configuration options:
[Auto] [Max. = 2.24375V] [Min. = 1.85000V]
Chipset Over Voltage [Auto]
Allows you to set the chipset over voltage. Configuration options: [Auto] [+50mv] [+100mv]
[+150mv]
2.4.2
CPU Configuration
The items in this menu show the CPU-related information that the BIOS automatically
detects.
GART Error Reporting [Disabled]
This option should remain disabled for the normal operation. The driver developer may
enable it for testing purpose. Configuration options: [Disabled] [Enabled]
Microcode Updation [Enabled]
Enables or disables Microcode Updation. Configuration options: [Disabled] [Enabled]
Secure Virtual Machine Mode [Disabled]
Enables or disables Secure Virtual Machine Mode (SVM) Configuration options: [Disabled]
[Enabled]
Cool ‘n’ Quiet [Disabled]
Enables or disables the AMD Cool ‘n’ Quiet technology. Configuration options: [Enabled]
[Disabled]
CPU Prefetching [Enabled]
Enables or disables CPU prefetching. Configuration options: [Enabled] [Disabled]
C1E Configuration [Disabled]
Allows you to enable or disable the CPU Enhanced Halt (C1E) function, a CPU power-saving
function in system halt state. When this item is enabled, the CPU core frequency and voltage
will be reduced during the system halt state to decrease power consumption.
Configuration options: [Disabled] [Enabled]
ASUS M4A78-EM
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2.4.3
Chipset
NorthBridge Configuration
Memory Configuration
Bank Interleaving [Auto]
Allows you to enable the bank memory interleaving. Configuration options: [Disabled]
[Auto]
Channel Interleaving [Disabled]
Allows you to enable the channel memory interleaving.
Configuration options: [Disabled] [Address bits 6] [Address bits 12]
[XOR of Address bits [20:16, 6]] [XOR of Address bits [20:16, 9]]
Enable Clock to All DIMMs [Disabled]
Enables unused Clocks to DIMMs even though memory slots are not populated.
Configuration options: [Disabled] [Enabled]
MemClk Tristate C3/ATLVID [Disabled]
Allows you to enable or disable MemClk Tri-Stating during C3 and Alt VID.
Configuration options: [Disabled] [Enabled]
Memory Hole Remapping [Enabled]
Allows you to enable or disable memory remapping around memory hole.
Configuration options: [Disabled] [Enabled]
DCT Unganged Mode [Auto]
Allows you to select unganged DRAM mode (64-bit width).
Configuration options: [Auto] [Always]
Power Down Enable [Enabled]
Allows you to enable or disable DDR power down mode.
Configuration options: [Disabled] [Enabled]
ECC Configuration
ECC Mode [Disabled]
Allows you to set the ECC mode. Configuration options: [Disabled] [Basic] [Good]
[Super] [Max] [User]
Internal Graphics
Primary Video Controller [GFX0-GPP-IGFX-PCI]
Configuration options: [GFX0-GPP-IGFX-PCI] [GPP-GFX0-IGFX-PCI]
[PCI-GFX0-GPP-IGFX] [IGFX-GFX0-GPP-PCI]
GFX0:VGA port on a graphics card inserted into a PCIe x16 slot
GPP: VGA port on a graphics card inserted into a PCIe x1 slot
IGFX: Onboard VGA port
PCI: VGA port on a graphics card inserted into a PCI slot
UMA Frame Buffer Size [Auto]
Configuration options: [Auto] [32MB] [64MB] [128MB] [256MB]
2-12
Chapter 2: BIOS information
Surround View [Auto]
Allows you to disable or enable the Surround View function. Configuration options: [Auto]
[Disabled] [Enabled]
This item becomes user-configurable when you install an ATI graphics card into the
PCIe x16 slot.
AMD 780 HD Audio [Enabled]
Allows you to enable or disable AMD 780 HD audio. Configuration options: [Enabled]
[Disabled]
2.4.4
Onboard Device Configuration
Serial Port1 Address [3F8/IRQ4]
Allows you to select the Serial Port1 base address. Configuration options: [Disabled]
[3F8/IRQ4][2F8/IRQ3] [3E8/IRQ4] [2E8/IRQ3]
Parallel Port Address [378]
Allows you to select the Parallel Port base addresses. Configuration options: [Disabled] [378]
[278] [3BC]
Parallel Port Mode [Normal]
Allows you to select the Parallel Port mode. Configuration options: [Normal] [EPP] [ECP]
[EPP+ECP]
Parallel Port IRQ [IRQ7]
Configuration options: [IRQ5] [IRQ7]
HDAudio Controller [Enabled]
Enables or disables the high definition audio controller. Configuration options: [Enabled]
[Disabled]
Front Panel Select [HD Audio]
Configuration options: [HD Audio] [AC97]
SPDIF_OUT Mode Setting [SPDIF Output]
Allows you to set the SPDIF_OUT mode. Configuration options: [HDMI Output]
[SPDIF Output]
OnBoard LAN Controller [Enabled]
Configuration options: [Enabled] [Disabled]
OnBoard LAN Boot ROM [Disabled]
Configuration options: [Disabled] [Enabled]
ASUS M4A78-EM
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2.4.5
PCIPnP
The PCI PnP menu items allow you to change the advanced settings for PCI/PnP devices.
The menu includes setting IRQ and DMA channel resources for either PCI/PnP or legacy ISA
devices, and setting the memory size block for legacy ISA devices.
Take caution when changing the settings of the PCI PnP menu items. Incorrect field values
can cause the system to malfunction.
Plug and Play O/S [No]
When set to [No], BIOS configures all the devices in the system. When set to [Yes] and if you
install a Plug and Play operating system, the operating system configures the Plug and Play
devices not required for boot. Configuration options: [No] [Yes]
2.4.6
USB Configuration
The items in this menu allows you to change the USB-related features. Select an item then
press <Enter> to display the configuration options.
The Module Version and USB Devices Enabled items show the auto-detected values. If no
USB device is detected, the item shows None.
USB Functions [Enabled]
Allows you to enable or disable the USB functions. Configuration options: [Disabled]
[Enabled]
USB 2.0 Controller [Enabled]
Enables or disables USB 2.0 Controllers. Configuration options: [Disabled] [Enabled]
Legacy USB Support [Auto]
Allows you to enable or disable support for Legacy USB storage devices, including USB flash
drives and USB hard drives. Setting to Auto allows the system to detect the presence of USB
devices at startup. If detected, the USB controller legacy mode is enabled. If no USB device
is detected, the legacy USB support is disabled. Configuration options: [Disabled] [Enabled]
[Auto]
USB 2.0 Controller Mode [HiSpeed]
Allows you to configure the USB 2.0 controller in HiSpeed (480Mbps) or Full Speed
(12Mbps). Configuration options: [FullSpeed] [HiSpeed]
2-14
Chapter 2: BIOS information
2.5
Power menu
The Power menu items allow you to change the settings for the Advanced Configuration and
Power Interface (ACPI) and the Advanced Power Management (APM). Select an item then
press <Enter> to display the configuration options.
BIOS SETUP UTILITY
Main
Advanced
Power
Boot
Tools
Exit
Select the ACPI state
used for System
Suspend.
Power Settings
Suspend Mode
ACPI 2.0 Support
ACPI APIC support
[Auto]
[Disabled]
[Enabled]
APM Configuration
HW Monitor Configuration
Select Screen
Select Item
+-
F1
Change Option
General Help
F10 Save and Exit
ESC Exit
v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.
2.5.1
Suspend Mode [Auto]
Allows you to select the Advanced Configuration and Power Interface (ACPI) state to be used
for system suspend. Configuration options: [S1 (POS) Only] [S3 Only] [Auto]
2.5.2
ACPI 2.0 Support [Disabled]
Allows you to enable or disable the Advanced Configuration and Power Interface (ACPI) 2.0
support. Configuration options: [Disabled] [Enabled]
2.5.3
ACPI APIC Support [Enabled]
Allows you to enable or disable the Advanced Configuration and Power Interface (ACPI)
support in the Advanced Programmable Interrupt Controller (APIC). When set to Enabled, the
ACPI APIC table pointer is included in the RSDT pointer list. Configuration options: [Disabled]
[Enabled]
2.5.4
APM Configuration
Restore on AC Power Loss [Power Off]
When set to Power Off, the system goes into off state after an AC power loss. When set to
Power On, the system goes on after an AC power loss. Configuration options: [Power Off]
[Power On] [Last State]
Power on From S5 By PME# [Disabled]
Enables or disables PME wake from sleep states. Configuration options: [Disabled] [Enabled]
Power on From S5 By Ring [Disabled]
Enables or disables ring to generate a wake event. Configuration options: [Disabled]
[Enabled]
ASUS M4A78-EM
2-15
Power on From S5 By PS/2 KB/MS [Disabled]
Enables or disables PS/2 Keyboard/Mouse to generate a wake event.
Configuration options: [Disabled] [Enabled]
Power on From S5 By RTC Alarm [Disabled]
Enables or disables RTC to generate a wake event. Configuration options: [Disabled]
[Enabled]
2.5.5
HW Monitor Configuration
CPU Temperature [xxxºC/xxxºF] or [Ignored]
MB Temperature [xxxºC/xxxºF] or [Ignored]
The onboard hardware monitor automatically detects and displays the motherboard and CPU
temperatures. Select Ignored if you do not wish to display the detected temperatures.
CPU Fan Speed [xxxxRPM] or [Ignored]
The onboard hardware monitor automatically detects and displays the CPU fan speed in
rotations per minute (RPM). If the fan is not connected to the motherboard, the field shows
N/A. Select Ignored if you do not wish to display the detected speed.
Chassis Fan Speed [N/A] or [Ignored]
The onboard hardware monitor automatically detects and displays the chassis fan speed in
rotations per minute (RPM). If the fan is not connected to the motherboard, the specific field
shows N/A. Select Ignored if you do not wish to display the detected speed.
Power Fan Speed [N/A] or [Ignored]
The onboard hardware monitor automatically detects and displays the power fan speed in
rotations per minute (RPM). If the fan is not connected to the motherboard, the specific field
shows N/A. Select Ignored if you do not wish to display the detected speed.
VCORE Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage [xx.xxxV] or [Ignored]
The onboard hardware monitor automatically detects the voltage output through the onboard
voltage regulators.
Smart Q-Fan Function [Enabled]
Allows you to enable or disable the ASUS Q-Fan feature that smartly adjusts the fan speeds
for more efficient system operation.
Configuration options: [Disabled] [Enabled]
Fan Auto Mode Start Voltage [5.0V]
Allows you to select the fan auto mode start voltage. Configuration options: [4.0V] [4.5V]
[5.0V] [5.5V] [6.0V]
Fan Auto Mode Start Speed Temp [25ºC]
Allows you to set the smart Q-Fan start working temperature. Configuration options: [25ºC] ~
[48ºC]
Fan Auto Mode Full Speed Temp [55ºC]
Allows you to set the smart Q-Fan full speed temperature. Configuration options: [51ºC] ~
[75ºC]
2-16
Chapter 2: BIOS information
2.6
Boot menu
The Boot menu items allow you to change the system boot options. Select an item then
press <Enter> to display the sub-menu.
BIOS SETUP UTILITY
Main
Advanced
Power
Boot
Tools
Exit
Specifies the Boot
Device Priority
sequence.
Boot Settings
Boot Device Priority
A virtual floppy disk
drive (Floppy Drive B:)
may appear when you set
the CD-ROM drive as the
first boot device.
Boot Settings Configuration
Security
Select Screen
Select Item
Enter Go to Sub Screen
F1
F10
ESC
General Help
Save and Exit
Exit
v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.
2.6.1
Boot Device Priority
1st ~ xxth Boot Device [xxx Drive]
These items specify the boot device priority sequence from the available devices. The
number of device items that appears on the screen depends on the number of devices
installed in the system. Configuration options: [Removable Dev.] [Hard Drive]
[ATAPI CD-ROM] [Disabled]
2.6.2
Boot Settings Configuration
Quick Boot [Enabled]
Enabling this item allows the BIOS to skip some power on self tests (POST) while booting to
decrease the time needed to boot the system. When set to [Disabled], BIOS performs all the
POST items. Configuration options: [Disabled] [Enabled]
Full Screen Logo [Enabled]
This allows you to enable or disable the full screen logo display feature. Configuration
options: [Disabled] [Enabled]
Set this item to [Enabled] to use the ASUS MyLogo2™ feature.
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2-17
AddOn ROM Display Mode [Force BIOS]
Sets the display mode for option ROM. Configuration options: [Force BIOS] [Keep Current]
Bootup Num-Lock [On]
Allows you to select the power-on state for the NumLock. Configuration options: [Off] [On]
Wait for ‘F1’ If Error [Enabled]
When set to Enabled, the system waits for the F1 key to be pressed when error occurs.
Configuration options: [Disabled] [Enabled]
Hit ‘DEL’ Message Display [Enabled]
When set to Enabled, the system displays the message Press DEL to run Setup during
POST. Configuration options: [Disabled] [Enabled]
2.6.3
Security
The Security menu items allow you to change the system security settings. Select
an item then press <Enter> to display the configuration options.
Change Supervisor Password
Select this item to set or change the supervisor password. The Supervisor Password item
on top of the screen shows the default Not Installed. After you set a password, this item
shows Installed.
To set a Supervisor Password:
1.
Select the Change Supervisor Password item and press <Enter>.
2.
From the password box, type a password composed of at least six letters and/or
numbers, then press <Enter>.
3.
Confirm the password when prompted.
The message Password Installed appears after you successfully set your password.
To change the supervisor password, follow the same steps as in setting a supervisor
password.
To clear the supervisor password, select the Change Supervisor Password then press
<Enter> twice. The message Password uninstalled appears.
If you forget your BIOS password, you can clear it by erasing the CMOS Real Time Clock
(RTC) RAM. See section 1.9 Jumpers for information on how to erase the RTC RAM.
2-18
Chapter 2: BIOS information
After you have set a supervisor password, the other items appear to allow you to change
other security settings.
User Access Level [Full Access]
This item allows you to select the access restriction to the Setup items. Configuration options:
[No Access] [View Only] [Limited] [Full Access]
No Access prevents user access to the Setup utility.
View Only allows access but does not allow change to any field.
Limited allows changes only to selected fields, such as Date and Time.
Full Access allows viewing and changing all the fields in the Setup utility.
Change User Password
Select this item to set or change the user password. The User Password item on top of the
screen shows the default Not Installed. After you set a password, this item shows Installed.
To set a User Password:
1.
Select the Change User Password item and press <Enter>.
2.
On the password box that appears, type a password composed of at least six letters
and/or numbers, then press <Enter>.
3.
Confirm the password when prompted.
The message “Password Installed” appears after you set your password successfully.
To change the user password, follow the same steps as in setting a user password.
Clear User Password
Select this item to clear the user password.
Password Check [Setup]
When set to [Setup], BIOS checks for user password when accessing the Setup utility. When
set to [Always], BIOS checks for user password both when accessing Setup and booting the
system. Configuration options: [Setup] [Always]
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2.7
Tools menu
The Tools menu items allow you to configure options for special functions. Select an item
then press <Enter> to display the sub-menu.
BIOS SETUP UTILITY
Main
Advanced
Power
Boot
Tools
Exit
Press ENTER to run
the utility to select
and update BIOS.
This utility doesn't
support :
ASUS EZ Flash 2
Express Gate
[Auto]
[10 Seconds]
[No]
Enter OS Timer
Reset User Data
1.NTFS format
AI NET2
Select Screen
Select Item
+-
Change Field
Enter Go to Sub
Screen
F1
General Help
F10 Save and Exit
ESC Exit
v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.
2.7.1
ASUS EZ Flash 2
Allows you to run ASUS EZ Flash 2. When you press <Enter>, a confirmation message
appears. Use the left/right arrow key to select between [Yes] or [No], then press <Enter> to
confirm your choice.
2.7.2
Express Gate [Auto]
Allows you to enable or disable the ASUS Express Gate feature. ASUS Express Gate is
a unique instant-on environment that provides quick access to the Internet and Skype.
Configuration options: [Enabled] [Disabled] [Auto]
Enter OS Timer [10 Seconds]
Sets countdown duration that the system waits at the Express Gate’s first screen
before starting Windows or other installed OS. Choose [Prompt User] to stay at the
first screen of Express Gate for user action. Configuration options: [Prompt User]
[1 second] [3 seconds] [5 seconds] [10 seconds] [15 seconds] [20 seconds]
[30 seconds]
Reset User Data [No]
Allows you to clear Express Gate’s user data. Configuration options: [No] [Reset]
When setting this item to [Reset], ensure to save the setting to the BIOS so that the
user data will be cleared the next time you enter the Express Gate. User data includes
the Express Gate’s settings as well as any personal information stored by the web
browser (bookmarks, cookies, browsing history, etc.). This is useful in the rare case
where corrupt settings prevent the Express Gate environment from launching properly.
The first time wizard will run again when you enter the Express Gate environment after
clearing its settings.
2.7.3
AI NET 2
Check Realtek LAN cable [Disabled]
Enables or disables checking of the Realtek LAN cable during the Power-On Self-Test
(POST). Configuration options: [Disabled] [Enabled]
2-20
Chapter 2: BIOS information
2.8
Exit menu
The Exit menu items allow you to load the optimal or failsafe default values for the BIOS
items, and save or discard your changes to the BIOS items.
BIOS SETUP UTILITY
Main
Advanced
Power
Boot
Tools
Exit
Exit Options
Exit system setup
after saving the
changes.
Exit & Save Changes
Exit & Discard Changes
Discard Changes
F10 key can be used
for this operation.
Load Setup Defaults
Pressing <Esc> does not immediately exit this menu. Select one of the options from this
menu or <F10> from the legend bar to exit.
Exit & Save Changes
Once you are finished making your selections, choose this option from the Exit menu to
ensure the values you selected are saved to the CMOS RAM. An onboard backup battery
sustains the CMOS RAM so it stays on even when the PC is turned off. When you select this
option, a confirmation window appears. Select OK to save changes and exit.
If you attempt to exit the Setup program without saving your changes, the program
prompts you with a message asking if you want to save your changes before exiting. Press
<Enter> to save the changes while exiting.
Exit & Discard Changes
Select this option only if you do not want to save the changes that you made to the Setup
program. If you made changes to fields other than System Date, System Time, and
Password, the BIOS asks for a confirmation before exiting.
Discard Changes
This option allows you to discard the selections you made and restore the previously saved
values. After selecting this option, a confirmation appears. Select OK to discard any changes
and load the previously saved values.
Load Setup Defaults
This option allows you to load the default values for each of the parameters on the Setup
menus. When you select this option or if you press <F5>, a confirmation window appears.
Select OK to load default values. Select Exit & Save Changes or make other changes
before saving the values to the non-volatile RAM.
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Chapter 2: BIOS information
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