ATEN CS1922M User Manual

CS1922M / CS1924M  
2/4 Port USB 3.0  
4K DisplayPort MST KVMP™ Switch  
User Manual  
CS1922M / CS1924M User Manual  
User Information  
Online Registration  
Be sure to register your product at our online support center:  
International  
Telephone Support  
For telephone support, call this number:  
International  
China  
886-2-8692-6959  
86-400-810-0-810  
81-3-5615-5811  
82-2-467-6789  
Japan  
Korea  
North America  
1-888-999-ATEN ext 4988  
1-949-428-1111  
User Notice  
All information, documentation, and specifications contained in this manual  
are subject to change without prior notification by the manufacturer. The  
manufacturer makes no representations or warranties, either expressed or  
implied, with respect to the contents hereof and specifically disclaims any  
warranties as to merchantability or fitness for any particular purpose. Any of  
the manufacturer's software described in this manual is sold or licensed as is.  
Should the programs prove defective following their purchase, the buyer (and  
not the manufacturer, its distributor, or its dealer), assumes the entire cost of all  
necessary servicing, repair and any incidental or consequential damages  
resulting from any defect in the software.  
The manufacturer of this system is not responsible for any radio and/or TV  
interference caused by unauthorized modifications to this device. It is the  
responsibility of the user to correct such interference.  
The manufacturer is not responsible for any damage incurred in the operation  
of this system if the correct operational voltage setting was not selected prior  
to operation. PLEASE VERIFY THAT THE VOLTAGE SETTING IS  
CORRECT BEFORE USE.  
iii  
         
CS1922M / CS1924M User Manual  
Package Contents  
The CS1922M / CS1924M package consists of:  
1 CS1922M / CS1924M 2/4-Port USB 3.0 4K DisplayPort MST  
KVMP™ Switch  
2/4 DisplayPort Cables (CS1922M / CS1924M, Certified)*  
2/4 USB 3.0 Cables (CS1922M / CS1924M)  
4/8 Audio Cables (CS1922M / CS1924M)  
1 Power Adapter  
1 User Instructions**  
Note: 1. The high quality DisplayPort cables included in this package (or cable  
of equal standards) are required to achieve 4K video resolutions.  
2. Features may have been added to the CS1922M / CS1924M since this  
manual was printed. Please visit our website to download the most  
up-to-date version of the manual.  
Check to make sure that all the components are present and that nothing got  
damaged in shipping. If you encounter a problem, contact your dealer.  
Read this manual thoroughly and follow the installation and operation  
procedures carefully to prevent any damage to the unit, and/or any of the  
devices connected to it.  
iv  
 
CS1922M / CS1924M User Manual  
Contents  
EMC Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii  
1. Introduction  
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2  
Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4  
2. Hardware Setup  
3. Basic Operation  
Mouse Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13  
Hotkey Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14  
Hot Plugging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14  
Powering Off and Restarting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14  
Port ID Numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14  
Alternative Manual Port Selection Settings. . . . . . . . . . . . . . . . . . . . . . . .15  
Display Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16  
Single Stream Transport (SST). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16  
Splitter Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17  
Multi-Stream Transport (MST). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18  
Maximum Resolution / Monitors . . . . . . . . . . . . . . . . . . . . . . . . . .19  
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CS1922M / CS1924M User Manual  
4. Hotkey Operation  
Keyboard Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27  
Restore Default Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27  
Power on Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29  
5. Keyboard Emulation  
6. The Firmware Upgrade Utility  
Upgrade Successful . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37  
Upgrade Failed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37  
Appendix  
Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39  
Technical Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41  
International . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41  
North America . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41  
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44  
Hotkey Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45  
Limited Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46  
vi  
CS1922M / CS1924M User Manual  
About this Manual  
This user manual is provided to help you get the most from your CS1922M /  
CS1924M unit. It covers all aspects of installation, configuration and  
operation. An overview of the information found in the manual is provided  
below.  
Chapter 1, Introduction, introduces you to the CS1922M / CS1924M. Its  
purpose, features and benefits are presented, and its front and back panel  
components are described.  
necessary steps are provided.  
Chapter 3, Basic Operation, explains the fundamental concepts involved  
in operating the CS1922M / CS1924M.  
Chapter 4, Hotkey Operation, details all of the concepts and procedures  
involved in the Hotkey operation of your CS1922M / CS1924M installation.  
Chapter 5, Keyboard Emulation, provides tables that list the PC to Mac  
and PC to Sun keyboard emulation mappings.  
Chapter 6, The Firmware Upgrade Utility, explains how to upgrade the  
CS1922M / CS1924M's firmware with the latest version available.  
An Appendix, provides specifications and other technical information  
regarding the CS1922M / CS1924M.  
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CS1922M / CS1924M User Manual  
Conventions  
This manual uses the following conventions:  
Monospaced  
[ ]  
Indicates text that you should key in.  
Indicates keys you should press. For example, [Enter] means to  
press the Enter key. If keys need to be chorded, they appear  
together in the same bracket with a plus sign between them:  
[Ctrl+Alt].  
1.  
Numbered lists represent procedures with sequential steps.  
Bullet lists provide information, but do not involve sequential steps.  
Indicates selecting the option (on a menu or dialog box, for  
example), that comes next. For example, Start  
Run means to  
open the Start menu, and then select Run.  
Indicates critical information.  
Product Information  
For information about all ATEN products and how they can help you connect  
without limits, visit ATEN on the Web or contact an ATEN Authorized  
Reseller. Visit ATEN on the Web for a list of locations and telephone numbers:  
International  
North America  
viii  
   
Chapter 1  
Introduction  
Overview  
The CS1922M / CS1924M 2/4-Port USB 3.0 4K DisplayPort MST KVMP™  
Switch takes a giant leap forward in KVM switch functionality by combining  
a KVM switch with a DisplayPort video interface, 2-port USB 3.1 Gen 1 hub,  
MST hub and 2.1 channel audio for rich bass in surround sound. DisplayPort  
technology provides a 4K UHD @ 60 Hz and 4K DCI @ 60 Hz resolution that  
displays the most vivid high-definition images available while pumping out  
premium sound for music, movies, and games.  
As a KVM switch with built-in MST hub, the CS1922M / CS1924M allows  
users to access two or four DisplayPort computers from a single USB  
keyboard, USB mouse and DisplayPort or HDMI monitor console. In addition  
to the front panel pushbuttons, hotkeys, and RS-232, the CS1922M / CS1924M  
offers the latest mouse port-switching functionality which allows a double-  
click of the scroll-wheel to change ports. A Power On Detection feature also  
ensures that if one computer is powered off, the CS1922M / CS1924M will  
automatically switch ports to the next powered-on computer.  
The 2-port USB 3.1 Gen 1 hub provides SuperSpeed 5 Gbps data transfer  
speeds to all connected peripherals. The unit’s independent (asynchronous)  
switching feature, allows the KVM focus to be on one computer while the USB  
peripheral focus is on another computer. This eliminates the need to purchase  
a separate USB hub or stand-alone peripheral sharer – such as a print server,  
modem splitter, etc.  
The CS1922M / CS1924M's built-in MST hub can receive DisplayPort™ 1.2  
signals from the source device and split it to independently route the video  
signal to multiple monitors.  
Featuring an unbeatable combination of ultra high 4K resolutions, a next  
generation USB 3.1 Gen 1 hub and enhanced, user-friendly operations, the  
CS1922M / CS1924M provides the latest innovations in desktop KVM  
technology.  
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CS1922M / CS1924M User Manual  
Features  
2/4-port DisplayPort KVMP Switch with USB 3.1 Gen 1 hub and 2.1  
surround sound audio  
One USB console controls 2/4 computers and two USB peripherals  
Computer selection via front panel pushbuttons, hotkeys, RS-232  
commands, and mouse*  
Independent switching of KVM, USB hub and audio focus  
Superior video quality – 4K UHD (3840 x 2160 @ 60 Hz) and 4K DCI  
(4096 x 2160 @ 60 Hz)  
2-port USB 3.1 Gen 1 hub with SuperSpeed 5 Gbps transfer rates  
DisplayPort 1.2 compliant, HDCP 1.3 compliant  
Supports HD audio through DisplayPort**  
Full bass response for high-quality 2.1 channel surround sound systems  
Power On Detection – if a computer is powered off the CS1922M /  
CS1924M automatically switches to the next powered-on computer  
Built-in Multi-Stream Transport (MST) hub – allows multiple monitors  
through a single DisplayPort source***  
DisplayPort Dual-Mode (DP++) technology supports passive HDMI and  
DVI adapters****  
Hot pluggable – add or remove computers without powering down the  
switch  
Mouse emulation/bypass feature supports most mouse drivers and  
multifunction mice  
Multi-platform support – Windows 2000, Windows XP, Windows Vista,  
Windows 7/8 and higher, Mac, and Linux  
Multilingual keyboard mapping supports English, Japanese, French and  
German keyboards  
Mac keyboard support and emulation*****  
Auto Scan Mode for monitoring all computers  
Firmware upgradeable  
Note: 1. Mouse port switching is only supported under mouse emulation mode  
with a USB 3-button mouse wheel.  
2. HD audio through DisplayPort cannot be switched independently.  
2
 
Chapter 1. Introduction  
3. MST (Multi-Stream Transport) requires either monitors capable of  
DisplayPort 1.2 daisy-chaining, or use of a powered DisplayPort  
MST Hub. A DisplayPort v1.1a display can be the last display in a  
DisplayPort v1.2 chain. The PC source must be DisplayPort 1.2  
compliant.  
4. DisplayPort Dual-Mode (DP++) does not require an active adapter  
for most single display setups. Active DisplayPort adapters are  
recommended if you are unsure of the video source's DP++  
compatibility.  
5. PC keyboard combinations emulate Mac keyboards. Mac keyboards  
only work with their own operating system.  
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CS1922M / CS1924M User Manual  
Requirements  
Console  
A DisplayPort or HDMI monitor capable of the highest possible resolution  
A USB mouse  
A USB keyboard  
Microphone and speakers  
Computers  
The following equipment must be available on each computer:  
DisplayPort port  
USB Type A port  
Audio ports  
Cables  
To guarantee video quality we recommend using only ATEN DisplayPort  
KVM cables which are certified by the VESA Compliance Program. Two  
(CS1922M) or four (CS1924M) cables are provided with this package.  
Note: 1. The video quality displayed is affected by the quality and length of the  
cables you use. We recommend the total length from the source to the  
monitor not exceed 3 meters. If you need additional cable sets, please  
contact your dealer to purchase ATEN approved cables.  
2. If you use DisplayPort cables that are DP 1.1 compliant, make sure  
the DisplayPort EQ setting on the monitor is set to auto or DP 1.1.  
4
       
Chapter 1. Introduction  
Operating Systems  
OS  
Version  
Windows  
2K / XP / 2003 / 2008 / Vista (x64 / x86) / 7 / 10 and higher  
9.0, Fedora and higher, RHEL AS 4, RHEL 5  
10 / 11.1 and higher; OpenSUSE 10.2; SLES 10 SP1  
3.1 / 4.0  
Linux  
RedHat  
SuSE  
Debian  
Ubuntu  
IBM AIX  
FreeBSD  
Novell  
OS  
7.04 / 7.10 and higher  
Unix  
Mac  
4.3 / 5L (V5.2, V5.3) / V6 (V6.1)  
5.5 / 6.1 / 6.2  
Netware 6.0 / 6.5  
10.1 / 10.2 / 10.3 / 10.4 / 10.5 / 10.7 / 10.8 and higher  
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CS1922M / CS1924M User Manual  
Components  
CS1922M Front View  
1
2
1
3
4
CS1924M Front View  
2
3
4
6
     
Chapter 1. Introduction  
No.  
Component  
Description  
For manual port selection (see Manual Switching, page 13):  
1
Port Selection  
Pushbuttons  
Press a port selection pushbutton for longer than two seconds to  
bring the KVM, USB hub, and audio focus to the computer  
attached to its corresponding port.  
Press a port selection pushbutton twice to bring the audio focus to  
the computer attached to its corresponding port.  
Press a port selection pushbutton for less than two seconds to  
bring only the KVM focus to the computer attached to its corre-  
sponding port.  
Press port selection pushbutton 1 and 2 simultaneously for 2 sec-  
onds to start Auto Scan Mode (see Auto Scanning, page 23).  
2
Port LEDs  
The Port LEDs are built into the Port Selection Pushbuttons. The  
upper are KVM Port LEDs; the lower are USB LEDs:  
KVM  
Lights DIM ORANGE to indicate that the computer attached to the  
corresponding port is connected (online).  
Changes to BRIGHT ORANGE to indicate that the computer  
attached to its corresponding port is the one that has the KVM  
focus (Selected).  
Flashes to indicate that the computer attached to its corresponding  
port is being accessed under Auto Scan mode.  
USB  
Lights GREEN to indicate that the computer attached to its corre-  
sponding port is the one that has access to the USB peripherals.  
3
4
Audio Ports  
The cables from your main speakers and main microphone plug in  
here. The speakers and microphone plugged in here have priority  
over those on the rear panel.  
USB 3.0 Port  
USB peripherals (printers, scanners, drives etc.) plug into this port.  
This USB 3.1 Gen 1 port features 5 Gbps data transfer rates for  
compatible USB peripherals.  
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CS1922M / CS1924M User Manual  
CS1922M Rear View  
1
2
3
CS1924M Rear View  
1
2
3
No.  
Component  
Description  
1
Console Ports  
The cables from your DisplayPort monitor, HDMI monitor, USB  
keyboard, USB mouse, speakers, microphone, and USB peripherals*  
plug in here. In addition, there is an RJ-11 port for serial control. Each  
connector is marked with an appropriate icon to indicate its use.  
Note: This USB 3.1 Gen 1 port features 5 Gbps data transfer rates for  
compatible USB peripherals.  
2
3
Power Jack  
KVM Ports  
The power adapter cable plugs into this jack.  
The cables that link the switch to your computers plug in here. Each  
KVM port section is comprised of a microphone jack, speaker jack,  
USB Type B socket and a DisplayPort connector.  
8
     
Chapter 2  
Hardware Setup  
1. Important safety information regarding the placement of this  
device is provided on page 39. Please review it before  
proceeding.  
2. To prevent damage to your installation from power surges or  
static electricity. It is important that all connected devices are  
properly grounded.  
3. Make sure that power to all the devices you will be installing has  
been turned off. You must unplug the power cords of any  
computers that have the Keyboard Power On function.  
Cable Connections  
To set up your installation, refer to the installation diagram on the following  
page (the numbers in the diagram on page 11 correspond to the steps below),  
and do the following:  
1. Plug the USB keyboard and USB mouse into the USB console ports  
located on the unit’s rear panel.  
2. Plug the console monitor into the DisplayPort and/or HDMI port located  
on the unit’s rear panel and power on the monitor(s). For multiple monitor  
setups, see Display Modes, on page 16.  
3. Plug the main microphone and speakers into the console microphone and  
speaker jacks located on the unit’s front panel. The microphone and  
speakers plugged into these ports have priority over those in the rear panel.  
4. (Optional) Plug your secondary microphone and speakers into the console  
audio ports located on the unit’s rear panel.  
5. Using the cables provided with this package, plug the DisplayPort, USB  
3.0, microphone, and speaker connectors into their corresponding sockets  
in the KVM Port section of the switch.  
9
     
CS1922M / CS1924M User Manual  
Note: Verify that all the plugs are in the same KVM Port sockets (all in  
Port 1, all in Port 2, etc.) Each socket is marked with an appropriate  
icon to indicate its function.  
6. At the other end of the cable set, plug the DisplayPort, USB 3.0,  
microphone, and speaker connectors into their respective ports on the  
computer.  
7. (Optional) Plug USB peripherals into the USB 3.0 ports located on the  
unit’s front and rear panel.  
8. (Optional) Connect an RJ11-to-DB9 cable from the unit’s Serial port to a  
computer’s serial port for RS-232 control.  
Note: The RJ11-to-DB9 cable is sold separately. Contact your ATEN  
dealer for product information.  
9. Plug the power adapter (provided with this package) into the unit’s Power  
Jack and then plug the other end into an AC power source.  
10. Power on the computers.  
Note:By default, the CS1922M / CS1924M switches to the first  
computer that is powered on.  
We recommend that the total video cable length from the PC to  
the console monitor cannot exceed 3 meters.  
Choosing high quality video cable ensures 4K UHD (3840x2160  
@ 60 Hz) or 4K DCI (4096x2160 @ 60Hz) resolutions can be  
achieved.  
Make sure the computers and devices that the CS1922M /  
CS1924M connects to are also properly grounded.  
10  
Chapter 2. Hardware Setup  
Installation Diagram  
7
1
3
HDMI  
2
DisplayPort  
8
5
4
7
9
Audio,  
DisplayPort,  
USB 3.0 Cables  
6
USB 3.0  
DisplayPort  
Audio  
11  
 
CS1922M / CS1924M User Manual  
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12  
Chapter 3  
Basic Operation  
Port Selection  
There are four methods to switch between the computers: Manual – by pressing  
the port selection pushbuttons on the front panel; Mouse – by double-clicking  
the scroll wheel; Hotkey – by entering key combinations on the keyboard; and  
RS-232 – by entering serial commands (visit the CS1924M / CS1922M page  
on the ATEN website to download the RS-232 commands user manual).  
Manual Switching  
For manual port selection:  
Press and release a port selection pushbutton to bring the KVM focus, plus  
the USB and Audio focus, to the computer attached to its corresponding  
port.  
Press and hold a port selection pushbutton for more than 2 seconds to  
bring the KVM focus to the computer attached to its corresponding port.  
The USB and Audio focus does not change – they stay with the port that  
they are already on.  
Press a port selection pushbutton twice to bring the audio focus to the  
computer attached to its corresponding port.  
Press and hold port selection pushbutton 1 and 2 for more than 2 seconds  
to start Auto Scan Mode (see page 23 for details).  
Press and release either port selection pushbutton to stop Auto Scan Mode.  
The KVM focus goes to the computer attached to the corresponding port  
of the switch you pressed.  
Mouse Switching  
For mouse port selection: Double-click the scroll wheel of your USB mouse to  
cycle through the ports.  
Note: 1. Mouse switching is only supported by USB 3-key scroll wheel mice.  
2. Mouse switching is disabled by default. See Mouse Port Switching,  
page 28, to enable mouse switching.  
13  
           
CS1922M / CS1924M User Manual  
3. Mouse switching is only supported when Mouse Emulation is  
enabled.  
Hotkey Switching  
For Hotkey port selection: All port switches from the keyboard begin by  
pressing the Scroll Lock key twice. Regarding details of the hotkey parameters,  
see Port Switching, page 21.  
Hot Plugging  
The CS1922M / CS1924M supports USB hot plugging – components can be  
removed and added back into the installation by unplugging their cables from  
the USB hub ports without the need to shut the unit down.  
Powering Off and Restarting  
If it becomes necessary to power off the switch, before powering it back on,  
you must do the following:  
1. Shut down all the computers that are attached to the switch.  
2. Unplug the switch’s power adapter cable.  
3. Wait 10 seconds, then plug the switch’s power adapter cable back in.  
4. Once the switch is powered up, power on the computers.  
Port ID Numbering  
Each KVM port section on the switch is assigned a port number (1 or 2 for the  
CS1922M) or (1 to 4 for the CS1924M). The port numbers are marked (CPU  
1, CPU 2, CPU 3, etc.) on the rear panel of the switch (see page 8 for details).  
The Port ID of a computer is derived from the KVM port number it is  
connected to. For example, a computer connected to KVM port 2 has a Port ID  
of 2.  
The Port ID is used to specify which computer gets the KVM, USB peripheral,  
and audio focus with the Hotkey port selection method (See Going Directly to  
a Port, page 22 for details).  
14  
         
Chapter 3. Basic Operation  
Alternative Manual Port Selection Settings  
When Hotkey Setting Mode has been activated (page 30), pressing [S] will  
invoke the alternative front panel pushbutton manual port selection functions,  
as explained below:  
Press a port selection pushbutton once to bring the KVM, audio and USB  
focus to the computer attached to its corresponding port.  
Press a port selection pushbutton twice to bring the audio focus to the  
computer attached to its corresponding port.  
Press and hold a port selection pushbutton for more than 2 seconds to  
bring only the KVM focus to the computer attached to its corresponding  
port.  
Press and hold port selection pushbuttons 1 and 2 for more than 2 seconds  
to start Auto Scan Mode, see page 23 for details.  
15  
   
CS1922M / CS1924M User Manual  
Display Modes  
Display Modes allow you to use one or multiple monitors to view video content  
in various ways. This section explains how to setup Single Stream Transport  
(SST) and Multi-Stream Transport (MST) display modes. By default, MST  
mode is enabled. To disable MST mode, see Display Mode, page 25.  
Single Stream Transport (SST)  
SST mode provides point to point connections between the switch and  
displays. To use SST mode, you must disable MST mode (see page 25).  
Connecting a display to the DisplayPort port:  
Connecting a display to the HDMI port:  
Note: The optimum resolution for SST mode is 4K DCI @ 60 Hz.  
16  
     
Chapter 3. Basic Operation  
Splitter Mode  
Splitter mode displays the same video content on two monitors allowing the  
source to be duplicated.  
1
2
A A  
With an external MST hub (not included) you can copy video content to one  
HDMI and two DisplayPort monitors, as shown below.  
1
2
3
A
A
Multi Stream  
Transport Hub  
Note: In Splitter mode, the optimum resolution for each output is 4K DCI @  
60 Hz. If you connect an external MST hub to the CS1922M / CS1924M's  
DisplayPort port, the video resolution for the two monitors depends on the  
bandwidth shared between the displays.  
17  
 
CS1922M / CS1924M User Manual  
Multi-Stream Transport (MST)  
A MST hub is built into the CS1922M / CS1924M. The MST hub allows you  
to combine multiple monitors into one large display – utilizing both the HDMI  
and DisplayPort connections, as shown below:  
1
2
Note: The optimum resolution for two monitors in MST mode is 4K @ 30 Hz.  
A third monitor can be added by connecting an external MST hub (not  
included) to split the DisplayPort signal, as shown below:  
.
1
2
3
Multi Stream  
Transport Hub  
Note: The optimum resolution for three monitors in MST mode depends on  
the bandwidth shared between the displays.  
18  
 
Chapter 3. Basic Operation  
Maximum Resolution / Monitors  
Maximum Number of Monitors  
Based on DisplayPort 1.2  
Bandwidth  
Display Resolution with Standard 60 Frames  
per Second Refresh Rate  
1680 x 1050 (WSXGA)  
1920 x 1080 (1080p), or 1920 x 1200  
2560 x 1600 (WQXGA)  
5
4
2
1
3840 x 2160 (4K UHD), or  
4096 x 2160 (4K DCI)  
19  
 
CS1922M / CS1924M User Manual  
This Page Intentionally Left Blank  
20  
Chapter 4  
Hotkey Operation  
The switch provides an extensive, easy-to-use, hotkey function that makes it  
convenient to control and configure your KVM installation from the keyboard.  
Hotkeys also provide asynchronous independent switching of the KVM, USB  
hub, and audio focus. Therefore, you can give one computer the KVM focus,  
another the USB hub focus, while a third has the audio focus.  
Port Switching  
All port switches begin with tapping the Scroll Lock key twice. The tables  
below describe the actions that each key combination performs.  
Note: If using the Scroll Lock key conflicts with other programs running on  
the computer, the Ctrl key can be used, instead. See Alternate Port  
Switching Keys, page 25, for details.  
Cycling Through the Ports  
Hotkey  
Action  
[Scroll Lock] [Scroll Lock]  
[Enter]  
Brings the KVM, USB hub, and audio focus from the port  
that currently has the KVM focus to the next port on the  
installation (CS1922M: 1 to 2; 2 to 1) (CS1924M: 1 to 2;  
2 to 3; 3 to 4; 4 to 1).  
Note: the KVM, USB hub, and audio focus all go to this  
port even if they were on different ports to begin with.  
[Scroll Lock] [Scroll Lock]  
[K] [Enter]  
Brings only the KVM focus from the port that currently  
has it to the next port on the installation. The USB and  
audio focus remain where they are.  
[Scroll Lock] [Scroll Lock]  
[U] [Enter]  
Brings only the USB hub focus from the port that  
currently has it to the next port on the installation. The  
KVM and audio focus remain where they are.  
[Scroll Lock] [Scroll Lock]  
[S] [Enter]  
Brings only the audio focus from the port that currently  
has it to the next port on the installation. The KVM and  
USB hub focus remain where they are.  
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CS1922M / CS1924M User Manual  
Going Directly to a Port  
Hotkey  
Action  
[Scroll Lock] [Scroll Lock]  
[n] [Enter]  
Brings the KVM, USB, and audio focus to the computer  
attached to the port corresponding to the specified Port  
ID.  
Note that the KVM, USB, and audio focus all go to this  
port even if they were on different ports to begin with.  
[Scroll Lock] [Scroll Lock]  
[n] [K] [Enter]  
Brings only the KVM focus to the computer attached to  
the specified port. The USB hub and audio focus remain  
where they are.  
[Scroll Lock] [Scroll Lock]  
[n] [U] [Enter]  
Brings only the USB hub focus to the computer attached  
to the specified port. The KVM and audio focus remain  
where they are.  
[Scroll Lock] [Scroll Lock]  
[n] [S] [Enter]  
Brings only the audio focus to the computer attached to  
the specified port. The KVM and USB hub focus remain  
where they are.  
[Scroll Lock] [Scroll Lock]  
[n] [K] [U] [Enter]  
Brings the KVM and USB hub focus to the computer  
attached to the specified port. The audio focus remains  
[Scroll Lock] [Scroll Lock]  
[n] [K] [S] [Enter]  
Brings the KVM and audio focus to the computer  
attached to the specified port. The USB focus remains  
where it is.  
[Scroll Lock] [Scroll Lock]  
[n] [U] [S] [Enter]  
Brings the USB hub and audio focus to the computer  
attached to the specified port. The KVM focus remains  
where it is.  
Note: The n stands for the computer’s Port ID number (1, 2, 3, or 4). See Port  
ID Numbering, page 14. Replace the n with the appropriate Port ID  
when entering hotkey combinations.  
22  
   
Chapter 4. Hotkey Operation  
Auto Scanning  
The switch’s Auto Scan feature automatically cycles the KVM focus through  
the computer ports at regular intervals. This allows you to monitor the  
computer activity without having to take the trouble of switching from port to  
port manually. See the table below for details.  
Hotkey  
Action  
[Scroll Lock] [Scroll  
Lock] [A] [Enter]  
Invokes Auto Scan. The KVM focus cycles from port to port  
at 5 second intervals. Five second intervals is the default  
setting.  
[Scroll Lock] [Scroll  
Lock] [A] [n] [Enter]  
The KVM focus cycles from port to port at n second intervals.  
Note: The n stands for the number of seconds that the  
CS1922M / CS1924M should dwell on a port before moving  
on to the next. Replace the n with a number between 1 and  
99 when entering this hotkey combination.  
Note: 1. While Auto Scan Mode is in effect, ordinary keyboard and mouse  
functions are suspended – only Auto Scan Mode compliant  
keystrokes and mouse clicks can be input. You must exit Auto Scan  
Mode in order to regain normal control of the console.  
2. Although the video focus switches from port to port, the keyboard,  
mouse, and USB focus do not switch. They stay at the port they were  
on when Auto Scanning started.  
3. To exit Auto Scan Mode, press the Esc key or the Spacebar.  
23  
   
CS1922M / CS1924M User Manual  
Hotkey Setting Mode  
Hotkey Setting Mode is used to set up your switch’s configuration. All  
operations begin with invoking Hotkey Setting Mode (HSM). After invoking  
HSM, use the hotkeys listed on the pages that follow to configure the switch.  
A summary of the HSM hotkeys is provided on page 30.  
Invoking HSM  
To invoke HSM, do the following:  
1. Press and hold down the [Num Lock] key.  
2. Press and release the [-] key.  
3. Release the [Num Lock] key.  
Note: 1. There is an alternate key combination to invoke HSM, see  
page 25 for details.  
2. The minus key must be released within one half-second,  
otherwise Hotkey invocation is canceled.  
When HSM is active, the Caps Lock and Scroll Lock LEDs flash in succession.  
They stop flashing and revert to normal status when you exit HSM.  
Ordinary keyboard and mouse functions are suspended – only Hotkey-  
compliant keystrokes and mouse clicks (described in the sections that follow),  
can be input.  
At the conclusion of some hotkey operations, you automatically exit HSM  
mode. With some operations, you must exit manually. To exit HSM manually,  
press the Esc key, or the Spacebar.  
24  
   
Chapter 4. Hotkey Operation  
Alternate HSM Invocation Keys  
An alternate set of HSM invocation keys is provided in case the default set  
conflicts with programs running on the computers.  
To switch to the alternate HSM invocation set, do the following:  
1. Invoke HSM (see page 24).  
2. Press and release the [H] key.  
The HSM invocation keys become the [Ctrl] and [F12] key (instead of  
[Num Lock] and [-]). This procedure is a toggle. Repeat to revert to the  
original setting.  
Alternate Port Switching Keys  
The port switching activation keys can be changed from tapping the [Scroll  
Lock] key twice to tapping the [Ctrl] key twice. To change the port switching  
activation keys, do the following:  
1. Invoke HSM (see page 24).  
2. Press and release the [T] key.  
This procedure is a toggle. Repeat to revert to the original setting.  
Beeper Hotkey  
To toggle the beeper on or off, do the following:  
1. Invoke HSM (see page 24).  
2. Press and release [B].  
This procedure is a toggle. Repeat to revert to the original setting.  
Display Mode  
This hotkey toggles between the Multi-Stream Transport (MST) and Single  
Stream Transport (SST) display modes. The default setting is Multi-Stream  
Transport (MST) enabled. For more information, see Display Modes, page 16.  
1. Invoke HSM (see page 24).  
2. Press and release [F].  
This procedure is a toggle. Repeat to revert to the original setting.  
25  
         
CS1922M / CS1924M User Manual  
Keyboard Operating Platform  
The switches’ default port configuration is for a PC-compatible keyboard  
operating platform. If your console uses a PC-compatible keyboard and you  
have a Mac attached to a port, for example, you can change the port’s keyboard  
operating platform configuration so that the PC-compatible keyboard emulates  
the Mac keyboard. The procedure is as follows:  
1. Bring the KVM focus to the port you want to set.  
2. Invoke HSM (see page 24).  
3. Press and release the appropriate Function key (see table below). After  
completing this procedure, you automatically exit HSM.  
Function Key  
[F1]  
Operation  
To set the keyboard/mouse to use SPC mode so that it can work  
under special operating systems as a standard (104 key) key-  
board/mouse.  
[F2]  
Enables Mac keyboard emulation, see Mac Keyboard, page 31  
for details.  
[F10]  
Automatically detects and sets the keyboard operating platform.  
List Switch Settings  
To see a listing of the current switch settings, do the following:  
1. Open a text editor or word processor and place the cursor in the page  
window.  
2. Invoke HSM (see page 24).  
3. Press and release [F4] to display the settings.  
USB Reset  
If the USB loses focus and needs to be reset, do the following:  
1. Invoke HSM (see page 24).  
2. Press and release [F5].  
26  
       
Chapter 4. Hotkey Operation  
Keyboard Language  
To change the keyboard language, do the following:  
1. Invoke HSM (see page 24).  
2. Press [F6] [nn] [Enter].  
Note: nn is a two-digit number that represents the keyboard language code  
(US English: 33; French: 08; Japanese: 15; German: 09).  
Port Switching Keys  
To disable the Port Switching Keys ([Scroll Lock] [Scroll Lock] / [Ctrl] [Ctrl]),  
do the following:  
1. Invoke HSM (see page 24).  
2. Press [X] [Enter].  
This procedure is a toggle. Repeat to revert to the original setting.  
Firmware Upgrade Mode  
To set the switch to Firmware Upgrade Mode, do the following:  
1. Invoke HSM (see page 24).  
2. Key in: [U] [P] [G] [R] [A] [D] [E].  
3. Press [Enter]. The front panel LEDs flash to indicate the upgrade has  
started.  
To exit Firmware Upgrade Mode, you must power off the switch.  
Restore Default Settings  
To reset the switch to its default hotkey settings, do the following:  
1. Invoke HSM (see page 24).  
2. Press [R] [Enter].  
All hotkey settings return to the factory default values (See Hotkey Default  
Settings, page 45).  
27  
       
CS1922M / CS1924M User Manual  
Alternative Manual Port Selection  
To toggle between the default and the alternative front panel pushbutton  
manual port selection settings, do the following:  
1. Invoke HSM (see page 24).  
2. Press [S].  
This procedure is a toggle. Repeat to revert to the original setting. See  
Alternative Manual Port Selection Settings, page 15, for more  
information.  
Mouse Emulation  
To toggle between mouse emulation enabled and disabled, do the following:  
1. Invoke HSM (see page 24).  
2. Press [M].  
This procedure is a toggle. Repeat to revert to the original setting  
Mouse Port Switching  
Mouse Port Switching allows you to use the mouse wheel button (clicked  
twice) to switch ports. For Mouse Port Switching to work, Mouse Emulation  
(above) must be enabled. To toggle between mouse port switching enabled and  
disabled, do the following:  
1. Invoke HSM (see page 24).  
2. Press [W].  
This procedure is a toggle. Repeat to revert to the original setting.  
Note: This feature is only supported by USB 3-key scroll wheel mice. The  
default setting is disabled. This feature is only supported when  
mouse emulation is also enabled. See Mouse Emulation, above.  
28  
       
Chapter 4. Hotkey Operation  
Keyboard Emulation  
The console keyboard port emulation/bypass feature supports most gaming/  
multimedia keyboards. The default setting is enabled. To disable, do the  
following:  
1. Invoke HSM (see page 24).  
2. Press [N].  
This procedure is a toggle. Repeat to revert to the original setting.  
Note: When keyboard emulation is disabled, the [M], [Q], [W], [F2], [F4],  
[F5], [F6], and [F10] hotkey operations are disabled.  
Power on Detection  
With Power on Detection, if the focus computer is powered off, the switch will  
automatically switch to the next powered-on computer. Power on Detection  
can be enabled or disabled. The default setting is enabled. To disable Power on  
Detection, do the following:  
1. Invoke HSM (see page 24).  
2. Press and release [E].  
This procedure is a toggle. Repeat to revert to the original setting.  
Monitor Re-detection  
If the monitor's display is blank, use this hotkey to re-detect the monitor’s  
EDID. Monitor re-detection can be enabled or disabled. The default setting is  
disabled. To enable monitor re-detection, do the following:  
1. Invoke HSM (see page 24).  
2. Press [Q] [n] [Enter].  
n is a one-digit number that represents the port number: n=1-2  
(CS1922M); or n=1-4 (CS1924M).  
This procedure is a toggle. Repeat to revert to the original setting.  
29  
     
CS1922M / CS1924M User Manual  
HSM Summary Table  
After invoking HSM (see page 24), key in one of the following keys to perform  
the corresponding function:  
Key  
[B]  
[E]  
[F]  
Function  
Toggles the beeper On and Off.  
Enable/Disable the Power on Detection feature.  
Enable/Disable Multi-Stream Transport (MST) mode.  
[H]  
Toggles between the default and alternate HSM  
invocation keys.  
[M]  
[N]  
Toggles between mouse emulation enable and disable.  
Enable/Disable keyboard emulation.  
[Q] [n] [Enter]  
[R] [Enter]  
[S]  
Enable/Disable monitor re-detection on port [n].  
Resets the hotkey settings to their default statuses.  
Toggles between the default and alternative pushbutton  
operation settings.  
[T]  
Toggles between the default ([Scroll Lock] [Scroll Lock])  
and alternate ([Ctrl] [Ctrl]) Port Switching keys.  
[U][P][G][R][A][D][E] [Enter] Invokes Firmware Upgrade Mode.  
[W]  
[X] [Enter]  
[F1]  
Enable/Disable mouse port switching  
Enable/Disable the Port Switching keys.  
Allows the keyboard and mouse to work under special  
operating systems as a standard (104 key) keyboard/  
mouse.  
[F2]  
[F4]  
Enables Mac keyboard emulation.  
Print the switch’s current settings via a text editor or  
word processor.  
[F5]  
Performs a reset on all USB devices.  
[F6] [nn] [Enter]  
Sets the keyboard language. nn represents one of the  
following keyboard language codes: US English: 33;  
French: 08; Japanese: 15; German: 09.  
[F10]  
Auto detects the keyboard operating platform.  
30  
   
Chapter 5  
Keyboard Emulation  
Mac Keyboard  
PC-compatible (101/104 key) keyboards can emulate the functions of a Mac  
keyboard. The emulation mappings are listed in the table below.  
PC Keyboard  
[Shift]  
Mac Keyboard  
Shift  
Ctrl  
[Ctrl]  
[Ctrl] [1]  
[Ctrl] [2]  
[Ctrl] [3]  
[Ctrl] [4]  
[Alt]  
Alt  
F13  
F14  
=
[Print Screen]  
[Scroll Lock]  
[Enter]  
[Backspace]  
[Insert]  
Return  
Delete  
Help  
F15  
[Ctrl]  
Note: When using key combinations, press and release the first key (Ctrl),  
then press and release the activation key.  
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CS1922M / CS1924M User Manual  
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32  
Chapter 6  
The Firmware Upgrade Utility  
The Windows-based Firmware Upgrade Utility (FWUpgrade.exe) provides a  
smooth, automated process for upgrading the KVM switch’s firmware. The  
Utility comes as part of a Firmware Upgrade Package that is specific for each  
device. Check the web site regularly to find the latest packages and information  
Before you Begin  
1. From a computer that is not part of your KVM installation, go to our  
Support & Downloads site and choose the model name that relates to your  
device (CS1922M / CS1924M) to get a list of available Firmware Upgrade  
Packages.  
2. Choose the Firmware Upgrade Package you want to install (usually the  
most recent), and download it to your computer.  
3. Disconnect the CS1922M / CS1924M from your KVM installation and  
power it off. Connect the USB cable's Type A connector to a USB port on  
your computer.  
5
3
5
4
33  
   
CS1922M / CS1924M User Manual  
4. At the other end of the USB cable, connect the USB Type B connector to  
the USB Type B port in the Port 1 KVM section.  
Note: The USB cable's USB Type B connector can be connected to any  
KVM port section, but the Port Selection pushbutton in Step 5,  
below, must be Port 1.  
5. Press and hold the Port 1 selection pushbutton. While you are holding the  
button, connect the power adapter to the CS1922M / CS1924M to enter  
Firmware Upgrade Mode. The front panel LEDs flash together to indicate  
Firmware Upgrade Mode is in effect.  
34  
6. The Firmware Upgrade Utility  
Starting the Upgrade  
1. Run the downloaded Firmware Upgrade Package file – either by double  
clicking the file icon, or using a command line to enter the full path.  
The Firmware Upgrade Utility Welcome screen appears:  
2. Read the License Agreement (click the I Agree radio button).  
3. Click Next. The Firmware Upgrade Utility main screen appears. The  
Utility inspects your installation. All the devices capable of being  
upgraded by the package are listed in the Device List panel.  
35  
 
CS1922M / CS1924M User Manual  
4. As you select a device in the list, its description appears in the Device  
Description panel.After you have made your device selection(s), click  
Next to perform the upgrade.  
If you enabled Check Firmware Version, the Utility compares the device’s  
firmware level with that of the upgrade files. If the device’s version is  
higher than the upgrade version, a dialog box gives you the option to  
Continue or Cancel.  
If you did not enable Check Firmware Version, the Utility installs the  
upgrade files without checking whether they are a higher level, or not.  
As the Upgrade proceeds, status messages appear in the Status Messages  
panel, and the progress toward completion is shown on the Progress bar.  
36  
6. The Firmware Upgrade Utility  
Upgrade Successful  
After the upgrade has completed, a screen appears to inform you that the  
procedure was successful:  
Click Finish to close the Firmware Upgrade Utility.  
After a successful completion, the CS1922M / CS1924M exits Firmware  
Upgrade Mode, and resets itself.  
Upgrade Failed  
If the Upgrade Successful screen does not appear, it means that the upgrade  
failed to complete successfully, and you should repeat the upgrade procedure  
from the beginning.  
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CS1922M / CS1924M User Manual  
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38  
Appendix  
Safety Instructions  
Read all of these instructions. Save them for future reference.  
This device is for indoor use only.  
Follow all warnings and instructions marked on the device.  
Do not place the device on any unstable surface (cart, stand, table, etc.). If  
the device falls, serious damage will result.  
Do not use the device near water.  
Do not place the device near, or over, radiators or heat registers.  
The device cabinet is provided with slots and openings to allow for  
adequate ventilation. To ensure reliable operation, and to protect against  
overheating, these openings must never be blocked or covered.  
The device should never be placed on a soft surface (bed, sofa, rug, etc.) as  
this will block its ventilation openings. Likewise, the device should not be  
placed in a built in enclosure unless adequate ventilation has been provided.  
Never spill liquid of any kind on the device.  
Unplug the device from the wall outlet before cleaning. Do not use liquid  
or aerosol cleaners. Use a damp cloth for cleaning.  
The device should be operated from the type of power source indicated on  
the marking label. If you are not sure of the type of power available,  
consult your dealer or local power company.  
Avoid circuit overloads. Before connecting equipment to a circuit, know  
the power supply’s limit and never exceed it. Always review the electrical  
specifications of a circuit to ensure that you are not creating a dangerous  
condition or that one doesn’t already exist. Circuit overloads can cause a  
fire and destroy equipment.  
The device is designed for IT power distribution systems with 230V  
phase-to-phase voltage.  
To prevent damage to your installation, it is important that all devices are  
properly grounded.  
Do not allow anything to rest on the power cord or cables. Route the  
power cord and cables so that they cannot be stepped on or tripped over.  
39  
       
CS1922M / CS1924M User Manual  
If an extension cord is used with this device make sure that the total of the  
ampere ratings of all products used on this cord does not exceed the  
extension cord ampere rating. Make sure that the total of all products  
plugged into the wall outlet does not exceed 15 amperes.  
To help protect your system from sudden, transient increases and  
decreases in electrical power, use a surge suppressor, line conditioner, or  
un-interruptible power supply (UPS).  
Position system cables and power cables carefully; Be sure that nothing  
rests on any cables.  
Never push objects of any kind into or through cabinet slots. They may  
touch dangerous voltage points or short out parts resulting in a risk of fire  
or electrical shock.  
Do not attempt to service the device yourself. Refer all servicing to  
qualified service personnel.  
If the following conditions occur, unplug the device from the wall outlet  
and bring it to qualified service personnel for repair.  
The power cord or plug has become damaged or frayed.  
Liquid has been spilled into the device.  
The device has been exposed to rain or water.  
The device has been dropped, or the cabinet has been damaged.  
The device exhibits a distinct change in performance, indicating a need  
for service.  
The device does not operate normally when the operating instructions  
are followed.  
Only adjust those controls that are covered in the operating instructions.  
Improper adjustment of other controls may result in damage that will  
require extensive work by a qualified technician to repair.  
Do not connect the RJ-11 connector to a public telecommunication  
network.  
40  
Appendix  
Technical Support  
Technical support is available both by email and online (with a browser over  
the web):  
International  
For online technical support – including troubleshooting, documentation,  
and software updates: http://support.aten.com  
For telephone support, see Telephone Support, page iii:  
North America  
Email Support  
Online Technical Troubleshooting  
Support  
Documentation  
Software Updates  
Telephone Support  
1-888-999-ATEN ext 4988  
1-949-428-1111  
When you contact us, please have the following information ready beforehand:  
Product model number, serial number, and date of purchase.  
Your computer configuration, including operating system, revision level,  
expansion cards, and software.  
Any error messages displayed at the time the error occurred.  
The sequence of operations that led up to the error.  
Any other information you feel may be of help.  
41  
     
CS1922M / CS1924M User Manual  
Specifications  
Function  
CS1922M  
CS1924M  
Connections  
Computer  
Console  
2
4
1
Port Selection  
Connectors  
Pushbuttons, Hotkey, Mouse*, RS-232 Commands  
1 x USB Type A  
Console  
Ports  
Keyboard  
Video  
1 x DisplayPort  
1 x HDMI  
Mouse  
1 x USB Type A  
Speakers  
1 x 3.5 mm Mini Stereo Jack (Green; Front)  
1 x 3.5 mm Mini Stereo Jack (Green; Rear)  
Mic  
1 x 3.5 mm Mini Stereo Jack (Pink; Front)  
1 x 3.5 mm Mini Stereo Jack (Pink; Rear)  
KVM Ports KB /  
Mouse  
2 x USB 3.1 Gen 1 Type B 4 x USB 3.1 Gen 1 Type B  
Video  
2 x DisplayPort  
4 x DisplayPort  
Speakers  
2 x 3.5 mm Mini Stereo  
Jack (Green)  
4 x 3.5 mm Mini Stereo  
Jack (Green)  
Mic  
2 x 3.5 mm Mini Stereo  
Jack (Pink)  
4 x 3.5 mm Mini Stereo  
Jack (Pink)  
USB Hub  
1 x USB 3.1 Gen 1 Type A (Front)  
1 x USB 3.1 Gen 1 Type A (Rear)  
Serial  
1 x RJ-11 Female  
Power  
Selected  
1 x DC Jack  
Switches  
LEDs  
2 x Pushbutton  
4 x Pushbutton  
4 (Orange)  
4 (Green)  
On Line / Selected  
USB Link  
2 (Orange)  
2 (Green)  
Emulation  
Video  
Keyboard / Mouse  
USB  
4096 x 2160 @ 60 Hz (4K DCI)  
1–99 secs. (5 secs. default)  
Scan Interval  
Power Consumption  
Environment Operating Temp.  
DC 5V  
DC 5V  
0–50º C  
-20–60º C  
Storage Temp.  
Humidity  
0–80% RH, Non-condensing  
42  
Appendix  
Function  
CS1922M  
CS1924M  
Physical  
Housing  
Metal  
Properties  
Weight  
0.73 kg  
0.92 kg  
Dimensions (L x W x H)  
21.00 x 8.80 x 5.55 cm  
27.00 x 8.80 x 5.55 cm  
* Port switching only works with 3-key USB mouse wheel in emulation mode.  
43  
CS1922M / CS1924M User Manual  
Troubleshooting  
Operation problems can be due to a variety of causes. The first step in solving  
them is to make sure that all cables are securely attached and seated completely  
in their sockets.  
In addition, updating the product’s firmware may solve problems that have  
been discovered and resolved since the prior version was released. If your  
product is not running the latest firmware version, we strongly recommend that  
you upgrade. See The Firmware Upgrade Utility, Chapter 6, for upgrade  
details.  
Symptom  
Possible Cause  
Action  
Erratic behavior.  
Unit not receiving  
enough power.  
Use a DC 5V power adapter if you  
are not already using one. If you are  
already using a power adapter,  
check that it matches the system  
specifications, and that it is plugged  
in and functioning properly.  
Keyboard and/or  
mouse need to be  
reset.  
Unplug the cable(s) from the console  
port(s), then plug it/them back in.  
No connection to the  
computer.  
Check the cable from the switch to  
the computer to make sure it is  
properly connected.  
KVM switch needs to  
be reset.  
Power off all devices on the  
installation; power off the KVM  
switch; wait five seconds; then  
power up.  
USB devices not  
responding.  
USB ports need to be  
reset.  
Unplug the device’s USB cable from  
the USB port on the switch’s rear  
panel, then plug it back in.  
Use the USB Reset hotkey  
combination (see page 26), to reset  
the USB ports.  
44  
 
Appendix  
Hotkey Default Settings  
The hotkey factory default settings are as follows:  
Setting  
Default  
[Scroll Lock] [Scroll Lock]  
Port Switching  
Invoking HSM  
[Number Lock] [-]  
5 Seconds  
On  
Auto Scan Interval  
Beeper  
Multi-Stream Transport (MST)  
Keyboard Operating Platform  
Port Switching Keys  
Enabled  
PC-Compatible  
Enabled  
45  
   
CS1922M / CS1924M User Manual  
Limited Warranty  
ATEN warrants its hardware in the country of purchase against flaws in materials and  
workmanship for a Warranty Period of two [2] years (warranty period may vary in  
certain regions/countries) commencing on the date of original purchase. This warranty  
period includes the LCD panel of ATEN LCD KVM switches. Select products are  
warranted for an additional year (see A+ Warranty for further details). Cables and  
accessories are not covered by the Standard Warranty.  
What is covered by the Limited Hardware Warranty  
ATEN will provide a repair service, without charge, during the Warranty Period. If a  
product is detective, ATEN will, at its discretion, have the option to (1) repair said  
product with new or repaired components, or (2) replace the entire product with an  
identical product or with a similar product which fulfills the same function as the  
defective product. Replaced products assume the warranty of the original product for  
the remaining period or a period of 90 days, whichever is longer. When the products or  
components are replaced, the replacing articles shall become customer property and the  
replaced articles shall become the property of ATEN.  
To learn more about our warranty policies, please visit our website:  
46  
 
Manual Part No. PAPE-0384-AT1G  
Printing Date: 2020-02-21  
© Copyright 2019 ATEN® International Co., Ltd.  
ATEN and the ATEN logo are registered trademarks of ATEN International Co., Ltd. All rights reserved.  
All other brand names and trademarks are the registered property of their respective owners.  
ATEN International Co., Ltd., 3F, No. 125, Sec. 2, Datung Rd., Sijhih District, New Taipei City 221, Taiwan  
Phone: 886-2-8692-6789 Fax: 886-2-8692-6767 TECHNICAL SUPPORT CENTER: 886-2-8692-6959  

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