IOGear GCS1932H User manual

www.iogear.com
User Manual
2/4-Port 4K HDMI KVMP Switch with
USB 3.1 Gen 1 Hub and Audio Mixer
GCS1932H/GCS1934H
PART NO. M1644/M1645

©2020 IOGEAR. All Rights Reserved. Part No. GCS1932H/GCS1934H. IOGEAR, the IOGEAR logo is trademarks of IOGEAR.
Microsoft and Windows are registered trademarks of Microsoft Corporation. IOGEAR makes no warranty of any kind with regards
to the information presented in this document. All information furnished here is for informational purposes only and is subject to
change without notice. IOGEAR. assumes no responsibility for any inaccuracies or errors that may appear in this document.

3
Safety Instructions 4
Conventions 5
Introduction 6
Package Contents 6
Features 7
Requirements 8
Operating Systems 8
Overview 9
Hardware Setup 12
Six-Display (DCC Mode) 14
Basic Operation 16
Hotkey Operation 18
Advance Conguration 21
Mouse and Keyboard Emulation 24
Hotkey Settings Mode Summary Table 26
Keyboard Emulation 27
Sun Keyboard 28
Firmware Upgrade Utility 29
Specications Chart 32
Troubleshooting 33
Compliance Information 33
Limited Warranty 33
Contact 33
FCC Information 34

4
Safety Instructions
■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, make sure never
exceed the power supply’s limit. Always review the electrical specications of a circuit
to ensure that you are not creating a dangerous condition. Circuit overloads may cause
re 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
■The device is equipped with a 3-wire grounding type plug. This is a safety feature.
If you are unable to insert the plug into the outlet, contact your electrician to replace
your obsolete outlet. Do not attempt to defeat the purpose of the grounding-type plug.
Always follow your local/national wiring codes
■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
■If an extension cord is used with this device, make sure that the total 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
cable

5
■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 re or electrical shock
■Do not attempt to service the device yourself. Refer all servicing to qualied service
personnel
■If the following conditions occur, unplug the device from the wall outlet and bring it to
qualied 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
qualied technician to repair
■Do not connect the RJ-11 connector marked “SERIAL” to a public telecommunication
network
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.
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, then select Run
Indicates critical information

6
IOGEAR’s GCS1932H/GCS1934H 2/4-Port 4K HDMI KVMP Switch combines KVM switch
with HDMI video interface and with built-in 2-port USB 3.1 Gen 1 hub. The HDMI interface
provides Cinema 4K @60Hz and 4K UHD @60Hz resolution, displaying the most vivid high-
denition images available.
Control and switch two or four HDMI computers from a single set of USB keyboard, mouse
and 4K HDMI monitor. The 4K HDMI Switch GCS1932H/GCS1934H enables fast port
switching using front panel pushbuttons, hotkeys or mouse-port switching. EDID mode is
built-in for a smoother power-up, high-quality display and increased monitor compatibility.
Power on Detection feature ensures that if a connected computer is powered o󰀨, the
GCS1932H/GCS1934H will automatically switch ports to the next powered on computer.
This 4K HDMI switch provides SuperSpeed 5 Gbps transfer rate to all connected USB
peripherals via built-in USB 3.1 Gen 1 hub. GCS1932H/GCS1934H supports independent
switching feature between KVM, USB and audio, allowing the switch focus to be on one
computer while USB or audio focus is on another. For further customization, this 2/4-port 4K
HDMI KVM switch provides audio mixing modes where you can combine up to two audio
sources as output.
IOGEAR’s GCS1932H/GCS1934H supports all of your 4K HDMI computer control and
switch. With its user friendly operations, this 4K KVM delivers the utmost 4K solution while
saving your desktop real estate.
Overview
GCS1932H
• 1 x 2-Port 4K USB HDMI KVMP Switch
• 2 x HDMI 2.0 cables¹
• 2 x USB cables
• 2 x Audio cables
• 1 x Power Adapter
• 1 x Quick Start Guide²
GCS1934H
• 1 x 4-Port 4K USB HDMI KVMP Switch
• 4 x HDMI 2.0 cables¹
• 4 x USB cables
• 4 x Audio cables
• 1 x Power Adapter
• 1 x Quick Start Guide²
1. 4K video resolution needs high quality HDMI cable
2. Features may have been added to the units since this manual was released. Please
visit www.IOGEAR.com to download the most current manual
Package Contents

7
• Control and switch between 2 or 4 HDMI computers from one USB keyboard, mouse
and 4K HDMI monitor
• EDID support – optimizes resolution when switching and eliminates booting up display
problem and compatibility issue
• Up to Cinema 4K (4096 x 2160 @60Hz) and 4K UHD (3840 x 2160 @60Hz) resolution
• Computer selection via front panel pushbuttons, hotkeys, mouse¹ and RS-232
commands²
• 2-port USB 3.1 Gen 1 hub with SuperSpeed 5 Gbps data transfer rates
• Supports Console keyboard and mouse emulation/bypass feature
• Supports independent switching of KVM, USB peripheral and Audio focus
• Multilingual keyboard mapping – English, Japanese, French and German keyboards
• Supports HD Audio³
• Audio Mixer Modes – mixes up to two audio sources as audio input
• Power on Detection – if a computer is powered o󰀨, the GCS1932H/GCS1934H
automatically switches to the next powered-on computer
• Hot pluggable – add or remove computer without turning the KVM o󰀨
• Sun and Mac keyboard support and emulation⁴
• Auto Scan Mode for monitoring all connected computers
• Firmware upgradeable
• Supports N-key Rollover⁵ (NKRO) – allows collision free key press
1. Supported using a USB 3-button wheel mouse and enabled mouse emulation
2. Connect an RJ-11 to DB-9 cable for the KVM switch to receive RS-232 commands
3. HD audio through HDMI channel cannot be switched independently
4. PC keyboard combinations emulate Mac keyboards. Mac keyboards work with Mac
OS®
5. N-key Rollover supports up to 15 simultaneous keystrokes
Features

8
Console
• A 4K HDMI monitor
• A Standard USB 3-button wheel wired mouse
• A Standard USB 104-key wired keyboard
• Speakers (optional)
Computers
• An HDMI port with 4K resolution
• A USB-A port
• An Audio port (optional)
Cables
The quality of the display is a󰀨ected by the quality of the cables. A total length not ex-
ceeding 20ft (10ft meters between PC and KVM switch plus 10ft between KVM switch
on monitor) is recommended. Please only use the cables included in the package.
Requirements
Operating Systems

9
Components
GCS1932H Front View
GCS1934H Front View
No. Component Description
1 Port Selection
Pushbuttons
For manual port selection (see Port Switching)
• Press a button for less than 2 seconds to bring the KVM, USB and Audio focus to the
computer of the corresponding port
• Press a button for longer than 2 seconds to bring only the KVM focus to the computer
of the corresponding port
• Press a button twice to bring the audio focus to the computer of the corresponding
port
• Press button 1 and 2 simultaneously for 2 seconds to start Auto Scan Mode
• For GCS1934H only, press button 3 and 4 simultaneously for 2 seconds to start
Keyboard/Mouse reset
2 Port LEDs The Port LEDs are built into the Port Selection Pushbuttons. The upper LEDs are KVM
Port LEDs, the lower LEDs are the USB LEDs:
KVM
• DIM ORANGE – computer of the corresponding port is connected (Online)
• BRIGHT ORANGE – computer of the corresponding port is on focus (Selected)
• FLASHES – computer of the corresponding port is under Auto Scan Mode
USB
• GREEN – computer of the corresponding port has USB focus
AUDIO
• GREEN – computer of the corresponding port has Audio focus
3 Audio Port Speakers connected to these main audio ports will have priority over ones connected to
rear panel
4 USB 3.1 Gen 1
Peripheral Port
USB peripheral (printer, scanners, drivers, etc) connected to these ports will be shared
amongst connected computers

10
No. Component Description
1 RJ-11 Serial Port Connect an RJ-11 to DB-9 cable for RS-232 serial commands
2 Console Port
Section
Connect HDMI monitor, USB keyboard, USB mouse, USB peripherals and speakers set.
Each connector is marked with the appropriate icon to indicate connections required
3 KVM Port Section Connect HDMI computer using the included HDMI, USB and Audio cables.
Each KVM port is marked with the appropriate icon to indicate connections required
4 Grounding
Terminal
Connect grounding wire (not included) to ground the GCS1932H/GCS1934H
5 Power Jack Connect the included power adapter
Sound Description
1 Beep • Changing Port
• Activating Auto-Scan Mode
• Pausing/Resuming Auto-Scan
• Enabling/Disabling Auto Mixer
• Invalid Command
2 Beeps • Interrupting Auto-Scan
• Entering Keyboard Emulation OFF mode
• Finishing USB synchronization
1 Long Beep • KVM Powered ON
• KVM Reset
GCS1932H Back View
GCS1934H Back View