Hall Research Technologies KVM-HDU-4 User manual

User’s Manual
KVM-HDU-4
4-Port HDMI KVM Switch
with
USB 2.0 and 4K Video Support
UMA1273 Rev D
Order toll-free in the U.S. 800-959-6439
FREE technical support: 714-641-6607 or [e-mail]
Hall Research
, 1163 Warner Ave. Tustin, CA 92780
www.hallresearch.com
CUSTOMER
SUPPORT
INFORMATION

KVM-HDU-4
2
Table of Contents
1.0 Introduction 3
2.0 Features 3
3.0 Setup and Operation 4
3.1 Hotkey Sequences 5
3.2 Smart EDID management 5
4.0 Troubleshooting 5
5.0 Specifications 6
TRADEMARKS USED IN THIS MANUAL
Hall Research and its logo are trademarks of Hall Research. Any other trademarks
mentioned in this manual are acknowledged as the property of the trademark owners.
FCC RADIO FREQUENCY INTERFERENCE STATEMENT
This device complies with part 15 Class A 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.
Changes or modifications not expressly approved by the party responsible for compliance
could void the user’s authority to operate the equipment.

4-Port KVM Switch with 4K HDMI & USB 2.0
3
1.0 Introduction
The KVM-HDU-4 is a compact 4 port HDMI KVM Switch that features high
speed video switching with HDMI Sink emulation technology, integrated
2-port USB hub, and Keyboard & mouse emulation for each PC input.
The switch supports ultrahigh resolution video including: 2560 x 1440,
2560 x 1600, and 3840 x 2160 @ 60 Hz.
Connected PCs do not experience any interruption to the video, keyboard,
and mouse operation as a result of switching among the 4 inputs. All
connected PCs continuously detect a keyboard, mouse and display
regardless of the currently selected port.
The KVM-HDU-4 provides an integrated 2-port USB 2.0 Hub. This hub gets
connected to the selected PC as the user switches among the 4 inputs.
Users can connect other USB devices such as webcams, touch screens or
printers to the KVM Switch. Devices plugged into the USB hub ports on the
KVM Switch are only routed to the selected PC. When you select a new PC,
those USB devices disconnect from the last PC and connect to the newly
selected PC.
The front panel features 4 individual buttons for selecting inputs. LED
indicators show the currently selected input port and the status of each
input. Inputs can also be selected via hot-key sequences from the
keyboard.
A power supply connection is not required. The KVM draws its operating
power from the PC USB connections. However, a 5v power input
connector is provided on the unit for special cases where power-hungry
USB devices are used and/or the PCs do not meet the USB power sourcing
specifications.
2.0 Features
•Supports high resolution video such as1920x1080, 2560x1440,
2560x1600 and 3840x2160
•4 Individual buttons on the front panel for selecting inputs
•Full plug-and-play support with USB keyboard, mouse, and
connected peripherals
•Emulates keyboard, mouse and display for all PCs
•Smart EDID Management
•Provides USB 2.0 Hub that switches to the selected PC
•Computer OS independent - No driver or software required
•No power supply required for most applications

KVM-HDU-4
4
3.0 Setup and Operation
The figure below shows the rear panel connections on the KVM Switch.
Cables are not included. For each input you must provide one HDMI and
one USB cable.
For the vast majority of KVM switching applications, the KVM-HDU-4 does
not require any power supply since it draws power from the USB
connections from the host PCs.
If the KVM-HDU-4 is used for switching video only with no USB inputs,
then a power supply needs to be connected.
This separately sold power supply is part number 511-U5V2AP5.
Front and Rear Panels
1. Press to select desired input
2. Status of inputs:
•Off = No host/PC connected (or host is off)
•Solid On = Host connected but not selected
•Blinking = Host port selected
3. HDMI inputs – Connect to video sources (from each host PC)
4. USB inputs – Connect to host PC USB ports
5. HDMI output – Connect to a display
6. Dedicated keyboard and mouse ports
7. USB 2.0 Peripherals Ports – These ports are from an integrated
USB 2.0 Hub and are routed to the selected PC’s USB port
8. Optional Power Input – For KVM applications, no external power
would be required for most applications.

4-Port KVM Switch with 4K HDMI & USB 2.0
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3.1 Hotkey Sequences
•To select inputs press the following key sequence
(1 represents the desired input channel in the example below)
•To start SCAN MODE press the following key sequence
Note: (1) You must complete the key sequence within 3 seconds.
(2) In SCAN mode the switch automatically cycles through all
inputs one at a time. Each input is shown for 10 seconds. To stop
the scan mode, press any key.
3.2 Smart EDID management
The KVM Switch reads the EDID of the connected display and uses it on all
its inputs. If there is no monitor at the output, the Switch will recall and
use the EDID of the last monitor that was plugged.
4.0 Troubleshooting
If you are experiencing problems getting the switch to work properly,
please use the following troubleshooting suggestions.
Make sure that all of the connections are solid.
Check the LEDs on the front panel.
Disconnect power and all USB inputs and reconnect them
If you still are not able to get the system working properly, contact Hall
Research support via email or fill out the form on support page of
http://www.hallresearch.com.
Please give a detailed description of the issue and the troubleshooting
steps you have taken along with the serial number.
Do not open or try to repair the unit yourself, as this will void your
warranty.
To return the extender for repair, contact HR Support and obtain an RMA
(Return Material Authorization) number.

KVM-HDU-4
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5.0 Specifications
Video
Standard
HDMI
Number of inputs
4
Bandwidth
600 MHz pixel clock or 18 Gbps video data rate
Max Resolution
3840 x 2160 @ 60Hz
USB
Standard
Version 2.0
Connectors
4x USB Type B Female for Hosts (PCs)
1x Keyboard Type A Female
1x Mouse Type A Female
2x USB 2.0 Peripherals from Built in Hub. Type A Female
General
Optional Power Supply
5 VDC @ 2A
Note: Power supply is not required for normal applications (USB
inputs supply power)
Power Consumption
0.7 watts
Excluding extra power drawn by USB devices that may be connected
Temp/humidity
Storage: -40~+158 °F (-40~+70 °C) / 10%~90%, non-condensing
Operating: +32~+122 °F (0~+50 °C) / 10%~90%, non-condensing
Cooling
Convection
Enclosure type
Metal
Dimensions
Device: 9.65" x 3.74" x 1.61" (245 x 95 x 41 mm)
Package/box: 11.38" x 7.88" x 2.75" (290 x 200 x 70 mm)
Weight
Device: 1.85 lbs (840 g)
Shipping: 2.2 lbs (1 kg)
Vibration
ISTA 1A in carton (International Safe Transit Association)
Safety
CE
EMI/EMC
CE, FCC Class A
MTBF
90,000 hours (Calculated Estimate)
Warranty
3 years parts and labor
Specifications are subject to change without notice

© Copyright 2020. Hall Research, LLC.
All rights reserved.
1163 Warner Ave., Tustin, CA 92780
Ph: [phone]