ATEN CS1842 User manual

CS1842 / CS1844
2/4-Port USB 3.0 4K HDMI Dual
Display KVMP™ Switch
User Manual

CS1842 / CS1844 User Manual
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Compliance Statements
FEDERAL COMMUNICATIONS COMMISSION INTERFERENCE
STATEMENT
This equipment has been tested and found to comply with the limits for a Class
A digital device, pursuant to Part 15 of the FCC ules. These limits are
designed to provide reasonable protection against harmful interference when
the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed and
used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference in which case the user
will be required to correct the interference at his own expense.
The device complies with Part 15 of the FCC ules. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference,
and (2) this device must accept any interference received, including
interference that may cause undesired operation.
FCC Caution
Any changes or modifications not expressly approved by the party responsible
for compliance could void the user's authority to operate this equipment.
Warning
Operation of this equipment in a residential environment could cause radio
interference.
Achtung
Der Gebrauch dieses Geräts in Wohnumgebung kann Funkstörungen
verursachen.
KCC Statement

CS1842 / CS1844 User Manual
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Industr Canada Statement
This Class A digital apparatus complies with Canadian ICES-003.
HDMI Trademark Statement
The terms HDMI, HDMI High-Definition Multimedia Interface, and the
HDMI Logo are trademarks or registered trademarks of HDMI Licensing
Administrator, Inc.
RoHS
This product is oHS compliant.

CS1842 / CS1844 User Manual
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警告使用者：
警告使用者：警告使用者：
警告使用者： 此為甲類資訊技術設備，於居住環境中使用時，可能會造
成射頻擾動，在此種 況下，使用者會被要求採取某些適當的對策。
KVM+
KVM+KVM+
KVM+ 多
多多
多電腦切換器類產品
電腦切換器類產品電腦切換器類產品
電腦切換器類產品
製造商
製造商製造商
製造商：
：：
： 宏正自動科技股份有限公司
地址
地址地址
地址 ：新北市汐止區大同路二段 125 號三樓
最大操作環境溫度
最大操作環境溫度最大操作環境溫度
最大操作環境溫度 :
::
: 40ºC
最大額定電壓
最大額定電壓最大額定電壓
最大額定電壓 :
::
: DC 12V
設備名稱
Equipment
Name
2/4 埠 USB 3.0 4K HDMI 雙螢
幕 KVMP
TM
多電腦切換器
型號 ( 型式 )
Type designa-
tion (Type)
CS1842 / CS1844
單元 Unit
限用物質及其化學符號
estricted substances and its chemical symbols
鉛 Lead
(Pb)
汞
Mercury
(Hg)
鎘
Cadmium
(C )
價鉻
Hexavalent
chromium
(Cr
+6
)
多溴聯苯
Polybrominated
biphenyls
(PBB)
多溴二苯醚
Polybrominated
diphenyl ethers
(PBDE)
電纜線 Cable
－ ○ ○ ○ ○ ○
印刷電路部件
PCBA
－ ○ ○ ○ ○ ○
塑膠 / 其他部件
Plastic / Other
parts
○ ○ ○ ○ ○ ○
金屬部件 Metal
parts
－ ○ ○ ○ ○ ○
備考 1. 〝超出 0.1 wt % 〞及 〝超出 0.01 wt % 〞係指限用物質之百分比含量超出百分比含量基準值。
Note 1 ： “Exceeding 0.1 wt %” and “exceeding 0.01 wt %” indicate that the percentage content of the restricted
substance exceeds the reference percentage value of presence condition.
備考 2. 〝○〞係指該項限用物質之百分比含量未超出百分比含量基準值。
Note 2 ： “ ○ ” indicates that the percentage content of the restricted substance does not exceed the percentage of
reference value of presence.
備考 3. 〝－〞係指該項限用物質為排 項目。
Note 3 ： “−” indicates that the restricted substance corresponds to the exemption.

CS1842 / CS1844 User Manual
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User Information
Online Registration
Be sure to register your product at our online support center:
Telephone Support
For telephone support, call this number:
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 VE IFY THAT THE VOLTAGE SETTING IS
CO ECT BEFO E USE.
International http://eservice.aten.com
International 886-2-8692-6959
China 86-400-810-0-810
Japan 81-3-5615-5811
Korea 82-2-467-6789
North America 1-888-999-ATEN ext 4988
1-949-428-1111

CS1842 / CS1844 User Manual
vi
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
eseller. Visit ATEN on the Web for a list of locations and telephone numbers:
International http://www.aten.com
North America http://www.aten-usa.com

CS1842 / CS1844 User Manual
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Package Contents
Check to make sure that all the components are in working order. If you
encounter any problem, please contact your dealer.
CS184
1 CS1842 2-Port USB 3.0 4K HDMI Dual Display KVMP™ Switch
4 HDMI cables
*
2 USB 3.0 cables
2 speaker cables
2 microphone cables
1 power adapter
1 remote port selector
1 user instructions
CS1844
1 CS1844 4-Port USB 3.0 4K HDMI Dual Display KVMP™ Switch
8 HDMI cables
*
4 USB 3.0 cables
4 speaker cables
4 microphone cables
1 power adapter
1 remote port selector
1 user instructions
Note: *To support 4K video resolution, we recommend to use the provided
ATEN HDMI cables.

CS1842 / CS1844 User Manual
viii
Contents
Compliance Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
User Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Online Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Telephone Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
User Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Pro uct Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vi
Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
CS1842 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
CS1844 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xi
Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii
1. Introduction
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Computers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Cables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Operating Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
CS1842 Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
CS1844 Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
CS1842 Rear View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
CS1844 Rear View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
LED Status Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Port LED Behavior. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Mo e Selection Pushbutton an Mo e LED Behavior . . . . . . . . . . 9
Buzzer Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
. Hardware Setup
Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Installation Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Qua -Display (DCC Mo e) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Qua -Display Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3. Basic Operation
Port Switching. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Manual Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Mouse Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Hotkey Switching. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Remote Port Selector Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

CS1842 / CS1844 User Manual
ix
Hot Plugging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Powering Off an Restarting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Port ID Numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Alternative Manual Port Selection Settings . . . . . . . . . . . . . . . . . . . . . . . . 19
4. Hotkey Operation
Port Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Cycling Through the Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Going Directly to a Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Auto Scanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Hotkey Setting Mo e (HSM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Invoking HSM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Alternate HSM Invocation Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Alternate Port Switching Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Keyboar Operating Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
List Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
USB Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Keyboar Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Buzzer Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Hotkey Port Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Firmware Upgra e Mo e. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Restore Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Power on Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Alternative Manual Port Selection Settings . . . . . . . . . . . . . . . . . . . . . 30
Keyboar Emulation Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Mouse Emulation Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Mouse Port Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
N-Key Rollover Keyboar Supporting Function. . . . . . . . . . . . . . . . . . 31
Switching Mo e Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
HSM Summary Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5. Keyboard Emulation
Mac Keyboar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Sun Keyboar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
6. RS- 3 Operation
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Har ware Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
RS-232 Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Console Login - HyperTerminal . . . . . . . . . . . . . . . . . . . . . . . . . . 39
RS-232 Comman s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Open / Close . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Switch Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Switch to Next Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

CS1842 / CS1844 User Manual
x
Switch Port (KVM Focus only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Switch Port (USB Peripherals Focus only) . . . . . . . . . . . . . . . . . . . . . 45
Switch Port (Au io Focus only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Switch Port (KVM an USB Focus) . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Switch Port (KVM an Au io Focus) . . . . . . . . . . . . . . . . . . . . . . . . . 48
Switch Port (USB an Au io Focus) . . . . . . . . . . . . . . . . . . . . . . . . . 49
Set Bau Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Keyboar Language Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Hotkey Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Hotkey Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
USB Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Restore Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Firmware Upgra e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
KVM Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
7. The Firmware Upgrade Utility
Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Starting the Upgra e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Upgra e Succee e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Upgra e Faile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
8. Appendix
Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
International . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
North America . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Optional Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Installation Kit Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Hotkey Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Limite Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

CS1842 / CS1844 User Manual
xi
About this Manual
This User Manual is provided to help you get the most from your CS1842 /
CS1844 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 CS1842 / CS1844. Its
purpose, features and benefits are presented, and its front, side, and back panel
components are described.
Chapter , Hardware Setup, describes how to set up your installation. The
necessary steps are provided.
Chapter 3, Basic Operation, explains the fundamental concepts involved
in operating the CS1842 / CS1844.
Chapter 4, Hotkey Operation, details all of the concepts and procedures
involved in the Hotkey operation of your CS1842 / CS1844 installation.
Chapter 5, Keyboard Emulation, provides tables that list the PC to Mac
and PC to Sun keyboard emulation mappings.
Chapter 7, The Firmware Upgrade Utility, explains how to use the
CS1842 / CS1844's firmware with the latest available versions.
Appendix, which provides specifications and other technical information
regarding the CS1842 / CS1844.
Note:
ead this manual thoroughly and follow the installation and operation
procedures carefully to prevent any damage to the unit or any connected
devices.
The product may be updated, with features and functions added, improved
or removed since the release of this manual. For an up-to-date user
manual, visit http://www.aten.com/global/en

CS1842 / CS1844 User Manual
xii
Conventions
This manual uses the following conventions:
Monospace In icates text that you shoul key in.
[ ] In icates keys you shoul press. For example, [Enter] means to
press the Enter key. If keys nee to be chor e , they appear
together in the same bracket with a plus sign between them:
[Ctrl+Alt].
1. Numbere lists represent proce ures with sequential steps.
♦Bullet lists provi e information, but o not involve sequential steps.
>In icates selecting the option (on a menu or ialog box, for
example), that comes next. For example, Start > Run means to
open the Start menu, an then select Run.
In icates critical information.

1
Chapter 1
Introduction
Overview
The CS1842 / CS1844 2/4-Port USB 3.0 4K HDMI Dual Display KVMP™
Switch combines KVM switch with HDMI video interface and 2-port USB 3.1
Gen 1 hub. The HDMI interface provides 4K UHD @ 60 Hz and 4K DCI @
60Hz resolution that displays the most vivid high-definition images available
while producing premium sound for music, movies, and games.
The CS1842 / CS1844 respectively allows users to access two or four HDMI
computers from a single USB keyboard, USB mouse and two HDMI monitors.
The CS1842 / CS1844 also supports Quad Display by connecting two Dual
Display KVM switches. In addition to the front panel pushbuttons, hotkeys,
mouse port-switching, and remote port selector functionality, the CS1842 /
CS1844 offers serial commands to help switch ports and configure device
settings. A Power On Detection feature also ensures that if one computer is
powered off, the CS1842 / CS1844 will automatically switch ports to the next
powered-on computer.
With a built-in USB 3.1 Gen 1 hub, the CS1842 / CS1844 provides SuperSpeed
5 Gbps transfer rates to all connected USB 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.
Featuring an unbeatable combination of ultra high 4K resolutions, a next
generation USB 3.1 Gen 1 hub and enhanced, user-friendly operations, the
CS1842 / CS1844 delivers the latest innovations in desktop KVM switching
technology.

CS1842 / CS1844 User Manual
2
Features
One USB keyboard, mouse and two HDMI monitors control two/four
HDMI computers and share two USB peripherals
Supports Quad Display by connecting two Dual Display KVM switches
Video DynaSync™ – An exclusive ATEN technology that eliminates boot-
up display problems and optimizes the resolution when switching among
different sources
Supports superior video quality – 4K UHD (3840 x 2160 @ 60 Hz) and
4K DCI (4096 x 2160 @ 60Hz)
Computer selection via pushbuttons, hotkeys, mouse
1
, remote port
selector, and S-232 commands
2
Built-in 2- Port USB 3.1 Gen 1 hub with SuperSpeed 5 Gbps data transfer
rates
Supports Console keyboard emulation/bypass feature
Supports Console mouse emulation/bypass feature
Independent switching of KVM, USB peripheral, and audio focus
3
Multilingual keyboard mapping - supports English, Japanese, French, and
German keyboards
HDMI compliant, HDCP 2.2 compliant
Supports HD Audio
3
Power on detection – if a computer is powered off, the CS1842 / CS1844
automatically switches to the next powered-on computer
Hot pluggable – add or remove computers without powering down the
switch
Sun and Mac keyboard support and emulation
4
Auto Scan Mode for monitoring all computers
Firmware upgradeable
Supports N-key ollover
5
(NK O) – Permits collision-free keying
Note: 1. Mouse port switching is only supported under mouse emulation
mode with a USB 3-button mouse wheel.
2. Slide the DCC switch to the s position to allow the KVM switch
to receive S-232 commands via an J-45-to-DB-9 cable. Please
see Hardware Connection, page 37.

Chapter 1. Intro uction
3
3. HD audio through HDMI channel cannot be switched
independently.
4. PC keyboard combinations emulate Mac keyboards. Mac
keyboards only work with their own operating system.
5. N-key ollover supports up to 15 simultaneous keystrokes.

CS1842 / CS1844 User Manual
4
Requirements
Console
Two HDMI monitors 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:
Two HDMI ports
Four HDMI ports for Quad-Display (DCC mode)
A USB Type-A port
Audio ports
Cables
To guarantee video quality, we recommend using only ATEN HDMI KVM
cables. Four (CS1842) or eight (CS1844) cables are provided with this
package.
Note: The quality of the display is affected by the quality of the cables.We
recommend the total length from the source to the monitor to not exceed
6 meters (3 meters between the PC and the KVM switch. 3 meters
between the KVM switch and the monitor). If you need additional
cables, please contact your dealer to purchase ATEN approved cables.
Operating Systems
Windows
Mac
Linux

Chapter 1. Intro uction
5
Components
CS184 Front View
CS1844 Front View
No. Component Description
1 mo e selection
pushbutton
 This pushbutton allows you to cycle through the four focus
mo es – complete, KVM, au io, an USB.
 Press an hol mo e selection pushbutton before powering on
an to enter Firmware Upgra e Mo e.
2 port selection
pushbuttons
For manual port selection (see Manual Switching, page 17):
 Press a port selection pushbutton for longer than two secon s to
only bring the KVM focus to the computer attache to its corre-
spon ing port.
 Press a port selection pushbutton twice to bring the au io focus
to the computer attache to its correspon ing port.
 Press a port selection pushbutton for less than two secon s to
bring the KVM, USB hub, an au io focus to the computer
attache to its correspon ing port.
Note: This function is isable when the fast switching
mo e is enable , see Switching Mode Selection, page
31.
 Press switches 1 an 2 simultaneously for 2 secon s to start
Auto Scan Mo e (see Auto Scanning, page 25).
 Press switches 3 an 4 simultaneously for 2 secon s to perform
a Keyboar /Mouse reset. Note: This feature is for CS1844 only.
3
2 1 2
4 5
3
2 1 2
4 5

CS1842 / CS1844 User Manual
6
CS184 Rear View
CS1844 Rear View
3 port LEDs This panel contains LED icons that light to in icate mo e an port
status. The mo e an port selection pushbuttons have three
correspon ing LED icons that light to in icate status – KVM, Audio,
an USB. Refer to LED Status Panel on page 8 for more info.
4 au io jacks Your console speakers an microphone plug in here.
5 USB 3.1 Gen 1
peripheral port
USB peripherals (printers, scanners, rives etc.) plug into this port.
This USB 3.1 Gen 1 port features 5 Gbps ata transfer rates for
compatible USB peripherals.
No. Component Description
1 DCC port
(Daisy Chain Control)
This RJ-45 port is use to connect two units together when
setting up DCC mo e for a Qua -Display mo e. See Quad-
Display Installation, page 16 for instructions.
2 console ports section The cables from your keyboar , mouse, monitors,
microphone, an speakers plug in here. Each connector is
marke with an appropriate icon to in icate itself.
No. Component Description
21 3
94 7 5 6 8
21 3
94 75 6 8

Chapter 1. Intro uction
7
Note: All console ports are located in the grey area.
3 KVM ports section The cables that link the switch to your computers plug in
here. Each KVM port section is comprise of a microphone
jack, speaker jack, USB Type B socket an two HDMI
connectors
4 power jack The power a apter cable plugs into this jack.
5 au io jacks Your console speakers an microphone plug in here.
Note:The microphone an speakers plugge into the front
panel have priority over those plugge into these jacks.
6 USB 3.1 Gen 1
peripheral port USB peripherals (printers, scanners, rives etc.) plug into
this port. This USB 3.1 Gen 1 port features 5 Gbps ata
transfer rates for compatible USB peripherals.
7 DCC switch This switch is use to specify the Host an Client when
setting up two units in Qua -Display DCC mo e. See Quad-
Display Installation, page 16 for instructions.
Sli e the DCC switch to the s position to allow the KVM
switch to receive RS-232 comman s via an
RJ-45-to-DB-9 cable. Please see RS- 3 Operation,
page 37.
8 remote port selector
jack
The remote port selector plugs in here.
9 groun ing terminal The groun ing wire use to groun the switch attaches here.
No. Component Description

CS1842 / CS1844 User Manual
8
LED Status Panel
The LED status panel is located above the pushbuttons. The LED columns
respectively correspond to the pushbuttons below.
Port LED Behavior
The LEDs of currently focused connectors (KVM, audio, USB link) will be
fully-lit.
The LED(s) of KVM connectors not currently focused but connected will be
half-lit.
The LED(s) of audio and USB link connectors not currently focused will be
dimmed.
No. Component
1 port LED / KVM icon LED
2 au io icon LED
3 USB link icon LED
4 mo e selection LED
CS1842 (Front)
CS1844 (Front)
4
1 1
2 3
4
1 1
2 3
32
2
3