ATEN CS1842 User manual

CS1842 / CS1844

2/4-Port USB 3.0 4K HDMI Dual Display KVMP™ Switch

User Manual

www.aten.com

CS1842 / CS1844 User Manual

ii

EMC Information

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 Rules.

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 Rules. 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.

KCC Statement

CS1842 / CS1844 User Manual

iii

RoHS

This product is RoHS compliant.

40ºC

DC 12V

Equipment

Name

2/4 USB 3.0 4K HDMI

KVMP

TM

Type designa-

tion (Type)

CS1842 / CS1844

Unit

Restricted substances and its chemical symbols

Lead

(Pb)

Mercury

(Hg)

Cadmium

(Cd)

Hexavalent

chromium

(Cr

+6

)

Polybrominated

biphenyls

(PBB)

Polybrominated

diphenyl ethers

(PBDE)

Cable

PCBA

Plastic / Other

parts

Metal

parts

1. 0.1 wt % 0.01 wt %

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.

2.

Note 2 “” indicates that the percentage content of the restricted substance does not exceed the percentage of

reference value of presence.

3.

Note 3 “−” indicates that the restricted substance corresponds to the exemption.

CS1842 / CS1844 User Manual

iv

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 VERIFY THAT THE VOLTAGE SETTING IS

CORRECT BEFORE 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

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Package Contents

CS1842

1 CS1842 2-Port USB 3.0 4K HDMI Dual Display KVMP™ Switch

4 HDMI 2.0 Cables

1

2 USB 3.0 Cables

2 Speaker Cables

2 Microphone Cables

1 Power Adapter

1 Remote Port Selector

1 User Instructions

2

CS1844

1 CS1844 4-Port USB 3.0 4K HDMI Dual Display KVMP™ Switch

8 HDMI 2.0 Cables

1

4 USB 3.0 Cables

4 Speaker Cables

4 Microphone Cables

1 Power Adapter

1 Remote Port Selector

1 User Instructions

2

Check to make sure that all the components are present and that nothing was

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.

Note: 1. 4K video resolution needs the high quality HDMI Cable.

2. Features may have been added to the CS1842 / CS1844 since this

manual was printed. Please visit our website to download the most

up-to-date version of the manual.

CS1842 / CS1844 User Manual

vi

Contents

EMC Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii

User Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iv

Online Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iv

Telephone Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iv

User Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iv

Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

CS1842 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

CS1844 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vi

About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ix

Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x

Product Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x

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

Buzzer Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2. Hardware Setup

Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Installation Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Quad-Display (DCC Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Quad-Display Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3. Basic Operation

Port Switching. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Manual Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Mouse Switching. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Hotkey Switching. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Remote Port Selector Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Hot Plugging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Powering Off and Restarting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

CS1842 / CS1844 User Manual

vii

Port ID Numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Alternative Manual Port Selection Settings . . . . . . . . . . . . . . . . . . . . . . . . 19

4. Hotkey Operation

Port Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Cycling Through the Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Going Directly to a Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Auto Scanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Hotkey Setting Mode (HSM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Invoking HSM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Alternate HSM Invocation Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Alternate Port Switching Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Keyboard Operating Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

List Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

USB Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Keyboard Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Buzzer Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Hotkey Port Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Firmware Upgrade Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Restore Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Power on Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Alternative Manual Port Selection Settings . . . . . . . . . . . . . . . . . . . . . 28

Keyboard Emulation Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Mouse Emulation Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Mouse Port Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

N-Key Rollover Keyboard Supporting Function. . . . . . . . . . . . . . . . . .29

HSM Summary Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5. Keyboard Emulation

Mac Keyboard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Sun Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

6. RS-232 Operation

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Hardware Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

RS-232 Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

RS-232 Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Open / Close . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Switch Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Set Baud Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Keyboard Language Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Hotkey Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Hotkey Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

USB Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

CS1842 / CS1844 User Manual

viii

Restore Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Firmware Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

KVM Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

7. The Firmware Upgrade Utility

Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Starting the Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Upgrade Succeeded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Upgrade Failed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

8. Appendix

Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

International . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

North America . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Optional Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Installation Kit Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Hotkey Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Limited Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

CS1842 / CS1844 User Manual

ix

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 2, 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.

An Appendix, which provides specifications and other technical information

regarding the CS1842 / CS1844.

CS1842 / CS1844 User Manual

x

Conventions

This manual uses the following conventions:

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:

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.

International http://www.aten.com

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 RS-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 2.0 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 Rollover

5

(NKRO) – 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 RS-232 commands via an RJ-45-to-DB-9 cable. Please

see Hardware Connection, page 35.

Chapter 1. Introduction

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 Rollover 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. Introduction

5

Components

CS1842 Front View

CS1844 Front View

No. Component Description

1 Mode Selection

Pushbutton



This pushbutton allows you to cycle through the four focus

modes – complete, KVM, audio, and USB.



Press and hold Mode Selection Pushbutton before powering on

and to enter Firmware Upgrade Mode.

2 Port Selection

Pushbuttons

For manual port selection (see Manual Switching, page 17):



Press a port selection pushbutton for longer than two seconds to

only bring the KVM focus to the computer attached to its corre-

sponding port.



Press a port selection pushbutton twice to bring the audio focus

to the computer attached to its corresponding port.



Press a switch for less than two seconds to bring the KVM, USB

hub, and audio focus to the computer attached to its correspond-

ing port.



Press switches 1 and 2 simultaneously for 2 seconds to start

Auto Scan Mode (see Auto Scanning, page 23).



Press switches 3 and 4 simultaneously for 2 seconds to perform

a Keyboard/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

CS1842 Rear View

CS1844 Rear View

3 Port LEDs This panel contains LED icons that light to indicate mode and port

status. The Mode and Port Selection Pushbuttons have three

corresponding LED icons that light to indicate status – KVM, Audio,

and USB. Refer to LED Status Panel on page 8 for more info.

4 Audio Jacks Your console speakers and microphone plug in here.

5 USB 3.1 Gen 1

Peripheral 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.

No. Component Description

1 DCC Port

(Daisy Chain Control)

This RJ-45 port is used to connect two units together when

setting up DCC mode for a Quad-Display mode. See Quad-

Display Installation, page 15 for instructions.

2 Console Ports Section The cables from your keyboard, mouse, monitors,

microphone, and speakers plug in here. Each connector is

marked with an appropriate icon to indicate itself.

No. Component Description

21 3

94 7

5 6 8

21 3

94 75 6 8

Chapter 1. Introduction

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 comprised of a microphone

jack, speaker jack, USB Type B socket and two HDMI

connectors

4 Power Jack The power adapter cable plugs into this jack.

5 Audio Jacks Your console speakers and microphone plug in here.

Note:The microphone and speakers plugged into the front

panel have priority over those plugged into these jacks.

6 USB 3.1 Gen 1

Peripheral 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.

7 DCC Switch This switch is used to specify the Host and Client when

setting up two units in Quad-Display DCC mode. See Quad-

Display Installation, page 15 for instructions.

Slide the DCC switch to the s position to allow the KVM

switch to receive RS-232 commands via an

RJ-45-to-DB-9 cable. Please see RS-232 Operation,

page 35.

8 Remote Port Selector

Jack

The Remote Port Selector plugs in here.

9 Grounding Terminal The grounding wire used to ground 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 Audio Icon LED

3 USB Link Icon LED

4 Mode Selection LED

CS1842 (Front)

CS1844 (Front)

4

1 1

2 3

4

1 1

2 3

32

2

3

Chapter 1. Introduction

9

Mode Selection Pushbutton and Mode LED Behavior

Pressing the Mode Selection Pushbutton different number of times will light up

different Mode LED, which allows for the follow-up action shown in the table.

For more information on the follow-up actions, please refer to Manual

Switching on page 17.

Button Press Mode LED that Lights up Follow-Up Action

Once

KVM, Audio, USB Press any of the Port Selection

Pushbutton to select focus for all

connectors

Twice

KVM Press any of the Port Selection

Pushbutton to select focus for KVM

connector

Three times

Audio Press any of the Port Selection

Pushbutton to select focus for audio

connectors

Four times

USB Press any of the Port Selection

Pushbutton to select focus for USB

link

CS1842 / CS1844 User Manual

10

Buzzer Behavior

Refer to Buzzer Control on page 27 if you wish to turn the buzzer on or off.

Sound Description

1 beep



Changing port



Activating auto-scan mode



Pausing/resuming auto-scan

1 long beep



Powering on the unit



Resetting the unit

2 beeps



Interrupting auto-scan



Entering keyboard emulation off mode



Finishing USB synchronization

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