StarTech.com SV431DPUA2 User manual

Manual Revision: 05/23/2019
User Manual
For the latest information and specications visit
www.startech.com/SV431DPUA2
4-Port USB KVM Switch | DisplayPort | 4K 60Hz
Actual product may vary from photos
SKU#: SV431DPUA2

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Compliance Statements
FCC Compliance Statement
This equipment has been tested and found to comply with the limits for a Class
B digital device, pursuant to part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment o and on, the user is
encouraged to try to correct the interference by one or more of the following
measures:
• Reorient or relocate the receiving antenna
• Increase the separation between the equipment and receiver
• Connect the equipment into an outlet on a circuit dierent from that to
which the receiver is connected
• Consult the dealer or an experienced radio/TV technician for help
Industry Canada Statement
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe [B] est conforme à la norme NMB-003 du
Canada.
CAN ICES-3 (B)/NMB-3(B)
Use of Trademarks, Registered Trademarks, and other
Protected Names and Symbols
This manual may make reference to trademarks, registered trademarks, and
other protected names and/or symbols of third-party companies not related in
any way to StarTech.com. Where they occur these references are for illustrative
purposes only and do not represent an endorsement of a product or service
by StarTech.com, or an endorsement of the product(s) to which this manual
applies by the third-party company in question. Regardless of any direct
acknowledgement elsewhere in the body of this document, StarTech.com
hereby acknowledges that all trademarks, registered trademarks, service marks,
and other protected names and/or symbols contained in this manual and
related documents are the property of their respective holders.

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Safety Statements
Safety Measures
• Wiring terminations should not be made with the product and/or electric
lines under power.
• Cables (including power and charging cables) should be placed and routed
to avoid creating electric, tripping or safety hazards.
Mesures de sécurité
• Les terminaisons de câblâge ne doivent pas être eectuées lorsque le produit
et/ou les câbles électriques sont sous tension.
• Les câbles (y compris les câbles d’alimentation et de chargement) doivent
être placés et acheminés de façon à éviter tout risque électrique, de chute ou
de sécurité
安全対策
• 電源が入っている状態の製品または電線の終端処理を行わないでくださ
い。
• ケーブル（電源ケーブルと充電ケーブルを含む）は、適切な配置と引き回し
を行い、電気障害やつまづきの危険性など、安全上のリスクを回避するよう
にしてください。
Misure di sicurezza
• I terminiali dei li elettrici non devono essere realizzate con il prodotto e/o le
linee elettriche sotto tensione.
• I cavi (inclusi i cavi di alimentazione e di ricarica) devono essere posizionati
e stesi in modo da evitare pericoli di inciampo, rischi di scosse elettriche o
pericoli per la sicurezza.
Säkerhetsåtgärder
• Montering av kabelavslutningar får inte göras när produkten och/eller
elledningarna är strömförda.
• Kablar (inklusive elkablar och laddningskablar) ska dras och placeras på så
sätt att risk för snubblingsolyckor och andra olyckor kan undvikas.

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Table of Contents
Compliance Statements........................................................................1
Safety Statements..................................................................................2
Product Diagram....................................................................................5
Front View.................................................................................................................................................... 5
Rear View...................................................................................................................................................... 6
Product Information..............................................................................7
Package contents...................................................................................................................................... 7
Requirements ............................................................................................................................................. 7
Installation ..............................................................................................8
Setting Up a PC .......................................................................................................................................... 8
Connecting a Console to the KVM Switch........................................................................................8
Connecting a Computer to the KVM Switch ................................................................................... 9
Operation ................................................................................................10
Selecting a Computer.............................................................................................................................. 10
Starting an Auto Scan.............................................................................................................................. 10
Setting Scan Time Duration................................................................................................................... 11
Using hotkey Commands......................................................................12
Disabling hotkey Commands ............................................................................................................... 12
Selecting a Computer.............................................................................................................................. 13
Starting an Auto Scan.............................................................................................................................. 13
Setting Scan Time Duration................................................................................................................... 13
Scanning Computers Manually............................................................................................................ 13

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Disabling the Audio Stick Feature....................................................................................................... 14
Using an Alternative hotkey Command............................................................................................ 15
About the LED indicators......................................................................15
Troubleshooting.....................................................................................16

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Product Diagram
Front View
1Port Selection/Link LEDs
2Power LED
3Port Select Buttons
2
3
1

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Rear View
1Console DisplayPort Port 6PC 4 Ports
2Power Adapter Port 7PC 3 Ports
3Console Speaker and Mic
Ports
8PC 2 Ports
4USB Keyboard and Mouse
Ports
9PC 1 Ports
5Console USB Ports
234567 8 9
1

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Product Information
Package contents
• KVM Switch x 1
• Foot Pads x 4
• Universal Power Adapter (NA/JP, EU, UK, ANZ) x 1
• Quick-Start Guide x 1
Requirements
Requirements are subject to change. For the latest
requirements, please visit www.StarTech.com/SV431DPUA2.
Cables
• USB-A to USB-cable or USB-C to USB-B cable’
• 3.5 mm audio cables
PC
• Computer system or video card enabled with DisplayPort
• Computer system enabled with USB
Components
• Display device (for example, monitor, projector, TV, and so
on) enabled with DisplayPort
• Standard wired or wireless USB keyboard
• Standard wired or wireless USB mouse

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Installation
Setting Up a PC
The following setup changes are required for PC users and
aren’t necessary if you’re using a mac.
1. In Standard CMOS, set Halt on Error to All But Keyboard.
2. In PNP and PCI Setup, set PNP OS Installed to Yes .
3. In PNP and PCI Setup, set USB IRQ to Enabled.
Connecting a Console to the KVM Switch
1. Turn o your computer and any devices or peripherals that
are connected to it (for example, printers, external hard
drives, and so on).
2. Connect a monitor or display to the console DisplayPort
port.
3. Do one of the following:
• Connect a keyboard and a mouse to the USB keyboard and
mouse ports.
• If you’re using a combination wireless keyboard and
mouse, connect the wireless receiver to the keyboard port.
4. If necessary, do any of the following:
• Connect speakers to the console audio speaker port.
• Connect a microphone to the console mic port.
• Connect USB peripherals to the USB hub ports.

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Connecting a Computer to the KVM Switch
You can connect up to four computers to the KVM switch.
1. Turn o the computers that you want to connect to the KVM
switch and any devices or peripherals that are connected to
the computers (for example, printers, external hard drives,
and so on).
2. Connect a DisplayPort video cable to the DisplayPort port on
your computer and to one of the PC DisplayPort ports on the
KVM switch.
3. Connect a USB cable to the USB port on the computer and to
the PC USB port on the KVM switch
4. If you’re using audio, connect speakers and/or a microphone
to the PC audio speaker and mic ports on the KVM switch.
5. To connect additional computers, repeat steps 1 to 4.
6. If you want to share USB peripherals between connected
computers or devices, connect the peripherals to the USB
hub ports on the KVM switch.
7. Connect the universal power adapter to a power source and
to the power adapter port on the KVM switch. The power
LED should illuminate.
8. Turn on any devices or peripherals that are connected to
the computer, and then turn on the connected computer.
Wait for the computer to nishing loading and then test the
functionality of the keyboard and mouse of the connected
computer.

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9. If additional computers are connected to the KVM switch,
select a dierent port and repeat step 8 until you have tested
the functionality of all of the connected computers.
Operation
Selecting a Computer
Port Selection Buttons
• Push the port selection button for the connected
computer that you want to select. The port selection/link
LED illuminates red to indicate the selected port.
HotKeys
If you are using a computer that’s running a version of
Windows® or Linux®, you can use hotkey commands to select a
computer.
• Press Left Ctrl, Left Ctrl, <the number of the computer
that you want to select>. The port selection/link LED
illuminates red to indicate the selected computer. For
more information about hotkey commands, see the “Using
hotkey commands”section of the manual.
Starting an Auto Scan
The KVM switch includes an Auto Scan feature that you can use
to scan through the connected computers in sequence with a
xed scan time. If any keyboard or mouse activity is detected
during the Auto Scan process, the scanning is paused until
the activity stops and then the scan resumes with the next
computer in the sequence.

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Port Selection Buttons
• Press port selection buttons 3 and 4 simultaneously. The port
selection/link LEDs blink during the Auto Scan process. To
exit the Auto Scan, press any of the port selection buttons.
Hotkeys
If you’re using a computer that’s running a version of Windows
or Linux, you can use hotkey commands to start an Auto Scan.
• Press Left Ctrl, Left Ctrl,F1. The port selection/link LEDs
blink during the Auto Scan process. To exit the Auto Scan,
press Left Ctrl, Left Ctrl. For more information about hotkey
commands, see the“Using hotkey commands” section of the
manual.
Setting Scan Time Duration
You can set the duration of the scan time to 3, 8, 15, or 30
seconds.
Port Selection Button
• Press port selection buttons 1 and 2 simultaneously. The KVM
switch beeps to indicate the duration of the scan time. It will
beep once for 3 seconds, twice for 8 seconds, three times for
15 seconds, and four times for 30 seconds.
Hotkeys
If you’re using a computer that’s running a version of Windows
or Linux, you can use hotkey commands to start an Auto Scan.

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• Press Left Ctrl, Left Ctrl,F3. The KVM switch beeps to
indicate the duration of the scan time. It will beep once for 3
seconds, twice for 8 seconds, three times for 15 seconds, and
four times for 30 seconds. For more information about hotkey
commands, see the“Using hotkey commands” section of the
manual.
Using hotkey Commands
If you’re using a computer that’s running a version of Windows
or Linux, you can use hotkey commands to operate the KVM
switch. All hotkey commands begin by pressing the Left Ctrl
key twice and then pressing one or two additional keys.
The KVM switch emits a high-pitched beep when you enter
a correct hotkey command sequence and low-pitched beep
when you enter an incorrect command. Incorrect hotkey
commands aren’t sent to the computer.
Note: Hotkey commands aren’t supported in the macOS
operating system.
Disabling hotkey Commands
By default, hotkey commands are enabled on the KVM switch.
• Press and hold the Left Shift key and press Num Lock twice.
Release the Left Shift key and then press the Left Ctrl key.
Note: To enable hotkey commands, repeat the key sequence
used to disable the hotkey commands.

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Selecting a Computer
• Press the Left Ctrl key twice and the number of the PC port
that you want to select. For example, if you want to select
computer 2, you would press Left Ctrl, Left Ctrl, 2.
Caution! Don’t use the numeric keyboard on the right side
of your keyboard when you complete the hotkey command
above.
Starting an Auto Scan
• Press Left Ctrl, Left Ctrl,F1. The port selection/link LEDs blink
during the Auto Scan process.
Note: To exit the Auto Scan, press Left Ctrl, Left Ctrl.
Setting Scan Time Duration
You can set the duration of the scan time to 3, 8, 15, or 30
seconds.
• Press Left Ctrl, Left Ctrl,F3. The KVM switch beeps to indicate
the duration of the scan time. It will beep once for 3 seconds,
twice for 8 seconds, three times for 15 seconds, and four times
for 30 seconds.
Scanning Computers Manually
The KVM switch includes a manual scan feature that you can
use to switch between connected computers that are turned
on.
1. Press Left Ctrl, Left Ctrl, F2.

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2. Do one of the following:
• To select the previous computer, press the up arrow key.
• To select the next computer, press the down arrow key.
3. To stop the manual scan, press any key.
Disabling the Audio Stick Feature
By default, the Audio Stick feature is enabled on the KVM
switch, which means that the audio selection is determined
by the computer that is currently selected. For example, if you
switch to computer 2, the audio selection changes to computer
2.
You can disable the Audio Stick feature and make the audio
selection independent from the computer that is currently
selected. For example, if you select computer 1 and then switch
to computer 2, the audio selection remains with computer 1
until you change it.
• Press Left Ctrl, Left Ctrl, F5. The KVM switch beeps once to
indicate that the Audio Stick feature is disabled.
Note: To enable the Audio Stick feature, press Left Ctrl,
Left Ctrl, A. The KVM switch beeps twice to indicate that the
Audio Stick feature is enabled.

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Using an Alternative hotkey Command
In addition to the Left Ctrl hotkey commands, there are two
alternative commands that you can use to select a computer:
• Press Scroll Lock, Scroll Lock, <the number of the port that
you want to select>.
• Press and hold the Left Shift key and press Num Lock twice.
Release the Left Shift key and then press the number of the
port that you want to select.
Note: Do not use the numeric keypad on the right side of the
keyboard when you complete the hotkey commands listed
above.
About the LED indicators
The KVM switch comes with a port selection/link LED for each
port, as well as a power LED. For more information about the
LEDs, consult the table below.
LED Behavior Scenario
Power LED Illuminated KVM switch is receiving
power
Port
selection/
link LEDs
Illuminated
green
Connected computer is
turned on
Illuminated red Connected computer is
currently selected
Blinking Auto Scan process is in
progress

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Troubleshooting
I can’t get my wireless mouse and keyboard to work
Some wireless mice and keyboards do work with KVM switches,
but in general, most wireless mice and keyboards don’t support
KVM switches. If you’re using a wireless mouse and keyboard in
your setup and are experiencing issues with your KVM switch,
try the following:
1. Remove the wireless mouse and keyboard transmitters from
the console USB mouse an keyboard ports, and move the
transmitters to one of the USB hub ports on the KVM switch.
Note: Hotkey commands won’t work if the wireless keyboard
transmitter is plugged into one of the USB hub ports.
2. If you’re still experiencing issues, replace the wireless mouse
and keyboard with a wired mouse and keyboard.
I can’t get my gaming or combination mouse and keyboard
to work
StarTech.com recommends that you might use a standard
3-button wired mouse and a 104-key wired keyboard in your
setup.
Gaming mice and keyboards and combination mice and
keyboards have more buttons and functionality than 3-button
mice and 104-key keyboards. Most KVM switches don’t support
the additional key functions and using them in your setup may
impact the performance of your KVM switch.

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My display or video destination uses a dierent type of
video connector than DisplayPort
If the display or video destination in your setup uses a dierent
type of video connector than DisplayPort, you can use a
converter to change the output type. For more information, visit
www.StarTech.com to see the dierent types of converters that
are available.
My keyboard keeps repeating keys when it’s plugged into
the KVM switch
To resolve this issue, try the following:
• If you’re running a version of the Windows OS, in the
Control Panel, navigate to the keyboard settings and
adjust the repeat delay and repeat rate until the keys no
longer repeat.
• If your keyboard is plugged into one of the USB keyboard
ports on the KVM switch, unplug it and plug it into one of
the USB hub ports.
Note: Hotkey commands aren’t available if your keyboard is
plugged into a USB hub port.
My mouse doesn’t move properly between my monitors
If you’re running a version of the Windows OS, in order for your
mouse to move properly between your monitors, you need
to rearrange your monitors in Windows to match the physical
location of your monitors in your setup.
1. In the Control Panel, navigate to the display settings.
2. To see how the operating system has ordered the monitors,
click Identify.

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3. Click and drag the monitor icons until the order in the
operating system matches the physical setup of the
monitors.
4. Click OK to apply the changes and close the window.

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Warranty Information
This product is backed by a two-year warranty.
For further information on product warranty terms and conditions, please refer
to www.startech.com/warranty.
Limitation of Liability
In no event shall the liability of StarTech.com Ltd. and StarTech.com USA LLP (or
their ocers, directors, employees or agents) for any damages (whether direct
or indirect, special, punitive, incidental, consequential, or otherwise), loss of
prots, loss of business, or any pecuniary loss, arising out of or related to the use
of the product exceed the actual price paid for the product.
Some states do not allow the exclusion or limitation of incidental or
consequential damages. If such laws apply, the limitations or exclusions
contained in this statement may not apply to you.
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