StarTech.com SV231DDVDUA User manual

Manual Revision: 05/01/2014
For the most up-to-date information, please visit: www.startech.com
DE: Bedienungsanleitung - de.startech.com
FR: Guide de l'utilisateur - fr.startech.com
ES: Guía del usuario - es.startech.com
IT: Guida per l'uso - it.startech.com
NL: Gebruiksaanwijzing - nl.startech.com
PT: Guia do usuário - pt.startech.com
SV231DDVDUA
SV431DDVDUA
2/4 Port DVI VGA Dual Monitor USB KVM
Switch with Audio & USB 2.0 Hub
*SV431DDVDUA Shown

Instruction Manual
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.
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.

Instruction Manual
i
Table of Contents
Introduction............................................................................................1
Packaging Contents ................................................................................................................................. 1
System Requirements.............................................................................................................................. 1
Installation ..............................................................................................2
Hardware Installation .............................................................................................................................. 2
Driver Installation...................................................................................................................................... 3
Operation ................................................................................................4
Front Panel................................................................................................................................................... 4
Rear Panel (SV431DDVDUA only)........................................................................................................ 5
HotKey Control .......................................................................................6
Alternative Hotkey Commands............................................................................................................ 8
Change Leading Hotkey......................................................................................................................... 9
Specications..........................................................................................10
Technical Support ..................................................................................11
Warranty Information............................................................................11

Instruction Manual
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Front View (SV431DDVDUA shown)
Rear View (SV431DDVDUA shown)
Port Selection/
Link LED
Port Selection
Button
Power Button
Console DVI/VGA
connector (output)
PC1
connectors
DC Power
connector
Function
Button
3.5mm Audio
Speaker/MIC
USB keyboard/
mouse connectors
USB Hub
connectors

Instruction Manual
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Introduction
The SV231DDVDUA 2-port or SV431DDVDUA 4-port Dual Monitor KVM Switch
(DVI+VGA) oers a complete multimedia switching solution, letting users control two
Dual Display computers using a single USB mouse and keyboard peripheral set.
With support for high-resolution video interfaces, this dual view KVM switch provides
one VGA (analog) and one DVI-I port per computer connection, as well as audio
switching capability between connected computers.
Delivering versatility for virtually any application, the DVI/VGA KVM switch features
an integrated 2-port USB hub that allows connected USB 2.0 peripherals to be shared
between connected computers, eliminating the need to purchase duplicate peripherals.
Suitable for any workspace, the dual monitor KVM switch oers a compact desktop KVM
design and features a rugged metal chassis that helps ensure durable performance.
Please Note: While both DVI-I (analog mode) and DVI-D (digital only) are supported by
the KVM, both source PCs must output the same signal type for proper switching. It is
recommended wherever possible to use DVI-D cables across all PC to KVM and KVM
to Console connections. If necessary, please contact our technical support team for
assistance identifying your source.
Backed by a StarTech.com 3-year warranty and free lifetime technical support.
Packaging Contents
• 1x Two Port KVM Switch (SV231DDVDUA)
• 1x Four Port KVM Switch (SV431DDVDUA)
• 1x Pack Rubber Feet
• 1x Universal Power Adapter (NA/UK/EU)
• 1x User Manual
System Requirements
• DVI and VGA enabled computer system/video card
• USB enabled computer system
• DVI or VGA enabled display devices (e.g. monitor, projector, TV, etc.)
• A standard 104-key wired USB keyboard
• A standard 3-button wired USB mouse

Instruction Manual
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Installation
NOTE: Prior to the installation, please power o all devices that will be connected to
this system.
Ensure that all devices you will connect are properly grounded.
Place cables away from uorescent lights, air conditioners, and machines that are likely
to generate electrical noise.
If you experience any problems using a USB KVM switch, the following BIOS setup
changes may be necessary for PC users and not necessary for Mac users:
Set HALT ON ERROR to ALL BUT KEYBOARD.
In PNP AND PCI SETUP, set PNP OS INSTALLED to YES and set USB IRQ to ENABLED.
Dierent systems may use dierent naming, so contact your system manufacturer for
further assistance with these settings.
Hardware Installation
1. Plug 1 or 2 monitor(s) into the Console side DVI and/or VGA connectors; plug a USB
keyboard and a USB mouse into the dedicated USB keyboard and mouse ports on
the KVM switch.
2. Use a male-to-male DVI and/or VGA video cable to connect the DVI/VGA
connector(s) on the computer’s video card, to one of the KVM’s PC ports (ie. PC1). A
dedicated video, USB and audio 4-in-1 KVM cable can be used (ie. StarTech.com ID:
USBDVI4N1A6 (DVI) or USBVGA4N1A6 (VGA)).
3. Use a USB type A-B Cable to connect the KVM’s USB port (type B, square connector) for
the PC port used in Step 2, and the USB port on the computer (type A, at connector).
4. Repeat for Steps 2 and 3 for each PC port on the KVM switch, or each computer you
wish to use on the KVM.

Instruction Manual
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OPTIONAL: Connect any other USB peripherals you wish to share between the
connected computers/devices to the extra USB Hub ports on the Console side.
5. Connect the external power adapter from a wall outlet to the power connector on
the rear panel of the KVM switch. The Power LED should light up solid and/or the
LED for the selected PC port.
6. Power up the rst computer/device and wait for it to fully boot and test keyboard/
mouse functionality.
7. Once operation has been successfully conrmed, switch to the next port and power
up that computer/device and conrm.
Driver Installation
No driver installation is required for the KVM switch, as the keyboard and mouse uses
native USB keyboard/mouse drivers that are already installed on all operating systems
that fully support USB.

Instruction Manual
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Operation
Front Panel
Port Selection/Link LED
The LED turns green when the connected computer is powered-on. The corresponding
LED will also illuminate red when that PC port is currently selected.
Port Selection Button
2 Port: Pressing the front panel “Select” button toggles between the PC ports on the
KVM switch.
4 Port: Each push button on the front panel corresponds with a PC port. Pressing the
button will immediately select that port.
Auto Scan
The KVM automatically scans through the powered-on computers in sequence on a
xed time interval (see Scan Time below).
To activate Auto Scan, press down front panel push buttons “3” and “4” simultaneously.
The port LED ashes during Auto Scan. Auto Scan is eective for powered-on
computers only. To exit the Auto Scan mode, just tap any one of the push buttons.
(SV431DDVDUA only)
NOTE: When Auto Scan detects any keyboard activity, it suspends the scanning until
the activity stops; it then resumes with the next computer in sequence. The length of
the Auto Scan interval (Scan Rate) is adjustable, see below.
Scan Time
Four options are available for users to set the Scan Time duration, which includes 3, 8,
15 and 30 seconds.
To change the Scan Time interval, press both front panel buttons “1” and “2”
simultaneously. The unit beeps 1, 2, 3 or 4 times for Scan Time of 3, 8, 15 or 30 seconds
respectively. (SV431DDVDUA only)
NOTE: Scan Time is automatically set to the default of 3 seconds when the units loses power.

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Rear Panel (SV431DDVDUA only)
To adjust the video signal strength/equalization settings for the length or quality of
DVI cable being used, the “FUNC” button combined with the front panel push buttons
can be used.
1. Press “FUNC” button three times, and the LED for “POWER” will start to ash once
per second.
2. Press front panel push button“1” one or two times to adjust the signal equalization
with one beep (normal) or two beeps (enhance) respectively.
or
Press front panel push button“3” one or two times to adjust the video signal output
current with one beep (normal) or two beeps (enhance) respectively.
or
Press front panel push button“4” one, two, three, or four times to adjust the output
emphasis with one beep (no pre-emphasis), two beeps (low pre-emphasis), three
beeps (medium pre-emphasis), or four beeps (high pre-emphasis).
3. Once the settings have been adjusted, press the “FUNC” button one time to exit
this mode.

Instruction Manual
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HotKey Control
A Hotkey command is a short keyboard sequence for selecting a computer, activating
computer scan, etc. A hotkey sequence starts with two left <CTRL> keystrokes
(successively within 0.2 seconds) followed by one or two more keystrokes. A high-
pitch beep will be generated for each correct hotkey command; otherwise, one low-
pitch beep is generated for errors and the bad key sequence will not be forwarded to
the selected computer.
NOTE: Press and hold Left <SHIFT> and press <NumLock> twice, then release <SHIFT>
followed by pressing left <CTRL> once, which will enable / disable the hotkey feature.
To select a computer:
Left <CTRL> + Left <CTRL> + <1>
(Example: Selects the computer at port 1.)
Left <CTRL> + Left <CTRL> + <2>
(Example: Selects the computer at port 2.)
NOTE: Do not use the keypad on the right-side of the keyboard.
Auto Scan
The KVM automatically scans through the powered-on computers in sequence on a
xed time interval (see Scan Time below).
To start Auto Scan:
Left <CTRL> + Left <CTRL> + <F1>
To abort the Auto Scan mode, press the left <CTRL> key twice.
NOTE: When Auto Scan detects any keyboard activity, it suspends the scanning until
the activity stops; it then resumes with the next computer in sequence. The length of
the Auto Scan interval (Scan Rate) is adjustable, see below.
Manual Scan allows users to manually switch back and forth between
powered-on computers.
Left <CTRL> + Left <CTRL> + <F2>
To select the previous or the next computer, press <UP> or <DOWN> arrow keys. To
abort the Manual Scan, press any other key.

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Scan Time
Four options are available for users to set the Scan Time duration, it Includes 3, 8, 15
and 30 seconds.
Note: Scan Time is set to 3 seconds by default.
To adjust Scan Rate, set the scan time of duration before switching to the next
computer:
Left <CTRL> + Left <CTRL> + <F3>
The KVM Switch generates 1 to 4 beeps indicating a scan time duration for 3, 8, 15 or
30 seconds respectively.
Audio Lock
There are two options for Audio Lock: ON and OFF. When ON, audio selection follows
computer selection. When OFF, audio selection stops following computer selection. It
is useful if you want to listen to a particular computer’s audio signal while operating
other computers.
Left <CTRL> + Left <CTRL> + <F5>
The KVM switch beeps once or twice corresponding to ON and OFF respectively.
To change which computer port the audio stays on to the currently selected port, press
the following hotkey:
Left <CTRL> + Left <CTRL> + <A>

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Alternative Hotkey Commands
In addition to the Left <CTRL> + Left <CTRL> hotkeys, there are two alternative hotkey
sequences available.
1. For the following operations, users may press <ScrollLock> twice instead of pressing
left <CTRL> twice.
To select a computer:
<ScrollLock> + <ScrollLock> + <1>
(Example: Select the computer at port 1.)
<ScrollLock> + <ScrollLock> + <2>
(Example: Select the computer at port 2.)
NOTE: Do not use the keypad at the right of the keyboard.
2. For those keyboards that do not have or support <ScrollLock>, please press and
HOLD the Left <SHIFT> and press <NumLock> twice instead of pressing Left
<CTRL> twice.
To select a computer:
hold Left <SHIFT> + press <NumLock> + press <NumLock>
then release <SHIFT> + press <1>
Example: Select the computer at port 1.)
hold Left <SHIFT> + press <NumLock> + press <NumLock>
then release <SHIFT> + press <2>
(Example: Select the computer at port 2.)
NOTE: Do not use the keypad at the right of the keyboard.

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Change Leading Hotkey
The default leading hotkey sequence involves pressing the left <CTRL> twice in
succession (e.g. left <CTRL> + left <CTRL>). This can be changed to the right <CTRL>
key instead, to avoid accidental activation due to using the left <CTRL> key for
functions such as Copy/Paste.
To change the leading hotkey sequence to Right <CTRL>:
Left <CTRL> + Left <CTRL> + hold <ALT> + press Right <CTRL>
All hotkey commands that previously required pressing the Left <CTRL> will be
switched to requiring the right <CTRL> instead.
To change the leading hotkey sequence back to Left <CTRL>:
Right <CTRL> + Right <CTRL> + hold <ALT> + press Left <CTRL>

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Specications
SV231DDVDUA SV431DDVDUA
Number of Ports 2 4
Computer Connectors
(per port)
1 x DVI-I female
1 x DE-15 VGA female
1 x USB type B
2 x 3.5mm mini-jack
Console Connectors
1 x DVI-I female
1 x DE-15 VGA female
4 x USB type A
2 x 3.5mm mini-jack
Maximum Video
Resolution
Digital: 1920x1200@60Hz
Analog: 1920x1440@60Hz
DDC2B Yes
Audio Yes
OSD No
Cascadable No
Switching Modes Front Panel Buttons, Hotkeys
Power Adapter 9~12VDC, 1.5A (included)
Enclosure Material Metal
Dimensions 100.0mm x 160.0mm x
57.0mm
130.0mm x 220.0mm x
60.0mm
Weight 750g 1236g

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Technical Support
StarTech.com’s lifetime technical support is an integral part of our commitment to
provide industry-leading solutions. If you ever need help with your product, visit
www.startech.com/support and access our comprehensive selection of online tools,
documentation, and downloads.
For the latest drivers/software, please visit www.startech.com/downloads
Warranty Information
This product is backed by a three year warranty.
In addition, StarTech.com warrants its products against defects in materials
and workmanship for the periods noted, following the initial date of purchase.
During this period, the products may be returned for repair, or replacement with
equivalent products at our discretion. The warranty covers parts and labor costs only.
StarTech.com does not warrant its products from defects or damages arising from
misuse, abuse, alteration, or normal wear and tear.
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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