Asus Computer Hardware B75M A User Manual

B75M-A  
 
Contents  
Chapter 1:  
iii  
Contents  
1.10.3 Intel® SBA support ........................................................ 1-34  
Chapter 2:  
iv  
Contents  
v
Safety information  
Electrical safety  
To prevent electrical shock hazard, disconnect the power cable from the electrical 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 components, carefully read all the manuals  
that came with the package.  
Before using the product, ensure 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 be exposed to moisture.  
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. It includes descriptions of the switches, jumpers, and connectors on the  
motherboard.  
Chapter 2: BIOS information  
This chapter discusses changing system settings through the BIOS Setup menus.  
Detailed descriptions fo the BIOS parameters are also provided.  
vi  
 
Where to find more information  
Refer to the following sources for additional information and for product and software  
updates.  
1.  
2.  
ASUS websites  
The ASUS website provides updated information on ASUS hardware and software  
products. Refer to the ASUS contact information.  
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.  
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  
completing a task.  
CAUTION: Information to prevent damage to the components when  
completing a task  
IMPORTANT: Instructions that you MUST follow to complete a task.  
NOTE: Tips and additional information to help you complete a task.  
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 (+).  
vii  
B75M-A specifications summary  
CPU  
LGA1155 socket for Intel® 3rd / 2nd Generation Core™ i7 / i5 / i3, Pentium®  
and Celeron® processors  
Supports Intel® 22/32nm CPU  
Supports Intel® Turbo Boost Technology 2.0  
* The Intel® Turbo Boost Technology 2.0 support depends on the CPU types.  
** Refer to www.asus.com for Intel® CPU support list.  
Chipset  
Memory  
Intel® B75 Express Chipset  
2 x DIMM, max. 16GB, DDR3 2200(O.C.) / 2000(O.C.) /1800 (O.C.) / 1600 /  
1333 / 1066 MHz, non-ECC, un-buffered memory  
Dual-channel memory architecture  
* Refer to www.asus.com for the latest Memory QVL (Qualified Vendors List).  
** When you install a total memory of 4GB capacity 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.  
*** Intel® 3rd generation processors support DDR3 1600 MHz and higher frequency.  
Graphics  
Integrated graphics processor  
Multi-VGA output support: HDMI, DVI-D, and D-Sub ports  
- Supports HDMI with max.resolution of 1920 x 1200 @60Hz  
- Supports DVI-D with max.resolution of 1920 x 1200 @60Hz  
- Supports D-Sub with max. resolution of 2048 x 1536 @75Hz  
Maximum shared memory of 1 GB  
1 x PCI Express 3.0/2.0 x16 slot  
2 x PCI Express 2.0 x1 slots  
1 x PCI slot  
Expansion slots  
Storage  
Intel® B75 Express Chipset:  
- 5 x Serial ATA 3.0 Gb/s connectors (blue)  
- 1 x Serial ATA 6.0 Gb/s connector (gray)  
Realtek® 8111F-VB-CG Gigabit LAN controller  
LAN  
Audio  
6+2 Channels Realtek® ALC887-VD High Definition Audio CODEC  
-
Supports jack-detection, multi-streaming, anti-pop function, and front  
panel jack-retasking  
*
Use a chassis with HD audio module in the front panel to support an 8-channel  
audio output.  
USB  
4 x USB 3.0 ports (2 ports at midboard, 2 ports at back panel)  
8 x USB 2.0 ports (4 ports at midboard, 4 ports at back panel)  
(continued on the next page)  
viii  
 
B75M-A specifications summary  
ASUS unique features  
ASUS Exclusive Features:  
- ASUS USB 3.0 Boost  
- ASUS Network iControl  
- ASUS AI Suite II  
- ASUS AI Charger  
- ASUS Anti-Surge Protection  
- ASUS UEFI BIOS  
ASUS Quiet Thermal Solution:  
- ASUS Fan Xpert  
ASUS EZ DIY:  
- ASUS CrashFree BIOS 3  
- ASUS EZ Flash 2  
- ASUS MyLogo 2™  
Other features  
- 100% All high-quality conductive polymer capacitors  
Rear panel I/O ports  
1 x PS/2 keyboard port (purple)  
1 x PS/2 mouse port (green)  
1 x HDMI port  
1 x DVI-D port  
1 x D-Sub port  
1 x LAN (RJ-45) port  
4 x USB 2.0/1.1 ports  
2 x USB 3.0 ports  
3 x Audio jacks  
Internal connectors/  
switches/ buttons  
1 x USB 3.0 connector supports additional 2 USB 3.0 ports  
2 x USB 2.0 connectors support additional 4 USB 2.0 ports  
5 x SATA 3.0 Gb/s connectors  
1 x SATA 6.0 Gb/s connector  
1 x CPU fan connector  
1 x Chassis fan connectors  
1 x Front panel audio connector (AAFP)  
1 x System panel connector  
1 x Speaker connector  
1 x 24-pin ATX power connector  
1 x 4-pin ATX 12V power connector  
(continued on the next page)  
ix  
B75M-A specifications summary  
BIOS features  
128 Mb Flash ROM, AMI BIOS, PnP, DMI2.0, WfM2.0, SM BIOS 2.5,  
ACPI 2.0a, Multi-language BIOS, ASUS EZ Flash 2, ASUS CrashFree  
BIOS 3  
Manageability  
Support DVD  
WfM 2.0, DMI 2.0, WOL by PME, WOR by PME, PXE  
Drivers  
ASUS utilities  
ASUS Update  
Anti-virus software (OEM version)  
Form factor  
MicroATX form factor: 9.6”x 7.0” (24.4cm x 17.8cm)  
Specifications are subject to change without notice.  
x
Package contents  
Check your motherboard package for the following items.  
DVI_VGA  
L G A 1 1 5 5  
DDR3 DIMM_A1 (64bit, 240-pin module)  
DDR3 DIMM_B1 (64bit, 240-pin module)  
SATA3G_5 SATA3G_3 SATA3G_1  
EATXPWR  
SATA6G_1  
SATA3G_4 SATA3G_2  
1 x Serial ATA 3.0Gb/s cable  
1 x Serial ATA 6.0Gb/s cable  
ASUS B75M-A motherboard  
User Manual  
1 x I/O-Shield  
User Guide  
Support DVD  
If any of the above items are damaged or missing, contact your retailer.  
The illustrated items above are for reference only. Actual product specifications may  
vary with different models.  
xi  
 
xii  
Product introduction  
1
1.1  
Special features  
Product highlights  
1.1.1  
LGA1155 socket for Intel® 3rd/2nd Generation Core™ i7 / Core™ i5 / Core™  
i3 processors  
This motherboard supports the Intel® 3rd/2nd generation Core™ i7 / Core™ i5 / Core™ i3  
processors in the LGA1155 package It provides great graphics performance with its iGPU,  
dual-channel DDR3 memory slots, and PCI Express 2.0/3.0 slots.  
Intel® B75 Express Chipset  
The Intel® B75 Express Chipset is the latest single-chipset designed to support the 1155  
socket Intel® 3rd/2nd generation Core™ i7 / Core™ i5 / Core™ i3 processors. It provides  
improved performance by utilizing serial point-to-point links, allowing increased bandwidth  
and stability. In addition, B75 chipset provides 4 USB 3.0 ports that retrieves data 10 times  
faster. Moreover, Intel® B75 Express Chipset also supports iGPU function, letting users enjoy  
the latest Intel integrated graphic performance.  
Dual-Channel DDR3 2200 (O.C.)*/ 2000 (O.C.) / 1800 (O.C.) / 1600 / 1333 / 1066  
MHz support  
The motherboard supports DDR3 memory that features data transfer rates of 2200 (O.C.)/  
2000 (O.C.) / 1800 (O.C.) / 1600 / 1333 / 1066 MHz to boost the system’s performance, and  
to meet the higher bandwidth requirements of the latest 3D graphics, multimedia, and Internet  
applications.  
*
Intel® 3rd generation processors support DDR3 1600 MHz and higher frequency.  
1.1.2  
ASUS Exclusive features  
Native SATA 6.0 Gb/s support  
With Intel® B75 Express Chipset native support for the next-generation Serial ATA (SATA)  
storage interface, this motherboard delivers up to 6.0 Gb/s data transfer rates. It also  
provides enhanced scalability, faster data retrieval, and double the bandwidth of current bus  
systems.  
1-1  
ASUS B75M-A  
Complete USB 3.0 Integration  
This motherboard offers you the strategic USB 3.0 accessibility for both the front and rear  
panels, allowing you to experience the convenience of the latest plug and play connectivity  
solution at speed up to ten times faster than USB 2.0.  
PCI Express® 3.0  
PCI Express® 3.0 (PCIe 3.0) is the PCI Express bus standard that provides twice the  
performance and speed of PCIe 2.0. It provides an optimal graphics performance,  
unprecedented data speed, and seamless transition with its complete backward compatibility  
to PCIe 1.0/2.0 devices.  
* Intel® 3rd generation Core™ processors support PCIe 3.0  
ASUS UEFI BIOS (EZ Mode)  
ASUS UEFI BIOS, a UEFI compliant architecture, offers the first mouse-controlled intuitive  
graphical BIOS interface that goes beyond the traditional keyboard-only BIOS controls,  
providing you with more flexibility, convenience, and easy to navigate EFI BIOS than the  
traditional BIOS versions. It offers you with dual selectable modes and native support for hard  
drives larger than 2.2 TB.  
ASUS UEFI BIOS includes the following new features:  
F12 BIOS snapshot hotkey  
F3 Shortcut for most accessed information  
ASUS DRAM SPD (Serial Presence Detect) information detecting faulty DIMMs, and  
helping with difficult POST situations.  
Ai Charger  
Ai Charger is a unique fast-charging software that supports iPods, iPhones, and iPads.  
* Check your USB mobile device if it fully supports the BC 1.1 function.  
** The actual charging speed may vary with your USB device’s conditions.  
*** Ai Charger is only supported when you set the USB device wake-up jumpers to +5VSB. See section 1.7 Jumpers  
for details.  
USB 3.0 Boost  
With USB 3.0 Boost technology, a USB device’s transmission speed is significantly  
increased, adding to an already impressive USB 3.0 transfer speed. ASUS software  
automatically accelerates data speeds for compatible USB 3.0 peripherals without the need  
for any user interaction.  
AI Suite II  
With its user interface, ASUS AI Suite II integrates several ASUS utilities and allows you to  
launch and operate these utilities simultaneously. It allows you to configure the overclocking  
settings, adjust the frequencies and related voltages, remotely control the system via a  
mobile device, and other easy-to-use helpful utilities.  
1-2  
Chapter 1: Product introduction  
ASUS MyLogo 2™  
This feature allows you to convert your favorite photo into a 256-color boot logo for a more  
colorful and vivid image on your screen.  
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 USB flash disk that contains the latest BIOS file.  
ASUS Fan Xpert  
ASUS Fan Xpert intelligently allows you to adjust both the CPU and chassis fan speeds  
based on different ambient temperatures, resulting to a quiet and cool computing  
environment.  
Network iControl  
Network iControl is an intuitive one-step network control center that makes it easier for you to  
manage your bandwidth and allows you to set, monitor, and schedule the bandwidth priorities  
for your network programs. It allows you to automatically connect to a PPPoE network for a  
more convenient online experience.  
ASUS Anti-Surge Protection  
This special design prevents expensive devices and the motherboard from damage caused  
by power surges from switching power supply (PSU).  
C.P.R. (CPU Parameter Recall)  
The BIOS C.P.R. feature automatically restores CPU default settings when the system  
crashes 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.  
ErP ready  
This motherboard is European Union´s Energy-related Products (ErP) ready, and ErP  
requires products to meet certain energy efficiency requirements with regard to energy  
consumption. This is in line with ASUS’ vision of creating environment-friendly and energy-  
efficient products through product design and innovation aimed at reducing carbon footprint  
and mitigating environmental impact.  
1-3  
ASUS B75M-A  
1.2  
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, ensure that the ATX power supply is  
switched off or the power cord is detached from the power supply. Failure to do so  
may cause severe damage to the motherboard, peripherals, or components.  
1.3  
Motherboard overview  
Before you install the motherboard, study the configuration of your chassis to ensure that the  
motherboard fits.  
Unplug the power cord before installing or removing the motherboard. Failure to do so can  
cause you physical injury and damage to motherboard components.  
1.3.1  
Placement direction  
When installing the motherboard, 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.  
1-4  
Chapter 1: Product introduction  
1.3.2  
Screw holes  
Place six 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.  
B75M-A  
Place this side  
towards the rear  
of the chassis  
1-5  
ASUS B75M-A  
1.3.3  
Motherboard layout  
1
2
3
4
5
4
6
17.8cm(7.0in)  
PS2_USBPW34  
KBMS  
CPU_FAN  
DIGI  
+VRM  
USB34  
ATX12V  
HDMI  
USBPW12  
2
USB3_12  
LAN1_USB12  
AUDIO  
BATTERY  
B75M-A  
PCIEX16  
CHA_FAN  
RTL  
8111F  
7
PCIEX1_1  
PCIEX1_2  
Intel®  
B75  
Super  
I/O  
128Mb  
BIOS  
8
9
ALC  
887  
PCI1  
USB56  
SB_PWR  
USB78  
USB3_34  
SPEAKER  
CLRTC  
USBPW5-8  
15  
AAFP  
F_PANEL  
13  
1
12  
11 10  
14  
1-6  
Chapter 1: Product introduction  
1.3.4  
Layout contents  
Connectors/Jumpers/Slots/LED  
Page  
1. USB device wake-up (USBPW12)  
1-22  
2. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)  
3. P/S 2 device wakeup (PS_USBPW34)  
1-26  
1-21  
1-27  
1-8  
4. CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN)  
5. Intel® LGA1155 CPU socket  
6. DDR3 DIMM slots  
1-13  
1-29  
1-30  
1-30  
1-28  
1-29  
1-31  
1-32  
1-20  
1-25  
7. Intel® B75 Serial ATA 3.0Gb/s connectors (7-pin SATA3G_1~5 [blue])  
8. Intel® B75 Serial ATA 6.0Gb/s connector (7-pin SATA6G_1 [gray])  
9. USB 3.0 connector (20-1 pin USB3_34)  
10. System panel connector (10-1 pin F_PANEL)  
11. Speaker connector (4-pin SPEAKER)  
12. USB 2.0 connectors (10-1 pin USB56, USB78)  
13. Onboard LED (SB_PWR)  
14. Clear RTC RAM (3-pin CLRTC)  
15. Front panel audio connector (10-1 pin AAFP)  
1-7  
ASUS B75M-A  
1.4  
Central Processing Unit (CPU)  
This motherboard comes with a surface mount LGA1155 socket designed for the Intel  
3rd/2nd generation Core™ i7 / Core™ i5 / Core™ i3 / Pentium® / Celeron® processors.  
B75M-A  
B75M-A CPU socket LGA1155  
Unplug all power cables before installing the CPU.  
Upon purchase of the motherboard, ensure that the PnP cap is on the socket and  
the socket contacts are not bent. Contact your retailer immediately if the PnP cap  
is missing, or if you see any damage to the PnP cap/socket contacts/motherboard  
components. ASUS will shoulder the cost of repair only if the damage is shipment/  
transit-related.  
Keep the cap after installing the motherboard. ASUS will process Return Merchandise  
Authorization (RMA) requests only if the motherboard comes with the cap on the  
LGA1155 socket.  
The product warranty does not cover damage to the socket contacts resulting from  
incorrect CPU installation/removal, or misplacement/loss/incorrect removal of the PnP  
cap.  
1-8  
Chapter 1: Product introduction