StarTech.com SV231DVIDDU User manual

Manual Revision: 04/25/2014
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
SV231DVIDDU
SV431DVIDDU
2 or 4 Port Dual DVI USB KVM Switch
with Audio and USB 2.0 Hub
*SV431DVIDDU 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
Computer Side........................................................................................2
Hardware Installation............................................................................4
PC BIOS Notice .......................................................................................................................................... 4
Console Connection................................................................................................................................. 4
Computer Connection ............................................................................................................................ 4
Hardware Operation..............................................................................5
Front-Panel Push Buttons....................................................................................................................... 5
Keyboard Hotkey Commands............................................................................................................... 5
To change the “Hotkey Command Key”............................................................................................ 5
Hotkey Reference Chart ........................................................................6
LED Information .....................................................................................8
Specications..........................................................................................9
Technical Support ..................................................................................10
Warranty Information............................................................................10

Instruction Manual
1
Introduction
This 2 Port Dual DVI USB KVM Switch allows two PCs, each with dual DVI displays, to
share two monitors, one microphone (and set of speakers), one keyboard and one
mouse as well as two other USB peripherals.
An ideal solution for graphic designers, CAD/CAM designers or educational and
nancial institutions, the Dual DVI USB KVM Switch allows you to instantly switch back
and forth between PCs at the touch of a button while maintaining professional level
video quality on both DVI monitors, in turn saving money by eliminating redundant
peripheral purchases.
Packaging Contents
• 1x 2 port Dual DVI KVM Switch
• 1x Power Adapter
• 1x Instruction Manual
System Requirements
• Console Side
• One or two DVI Monitors
• One USB Keyboard
• One USB mouse
• One 3.5mm microphone (optional)
• One 3.5mm audio output device (Optional)

Instruction Manual
2
Computer Side
• One DVI cable per DVI port (Maximum 2 ports per computer)
• One USB A-B Cable with Type-A and Type-B plug per computer
• Two 3.5mm audio cables per computer (Optional)
• Please Note: In place of using individual cables, StarTech.com oers a 6 ft. 4-in-1
USB, DVI, Audio, and Microphone KVM Switch Cable (USBDVI4N1A6) that can fulll
USB, audio, and video functions in one convenient unit. For dual head video cards
an additional DVI cable will also be required.

Instruction Manual
3
SV431DVIDDU Front
SV431DVIDDU Back
*SV431DVIDDU shown - actual product may vary from photo
Port Selection
Button
Computer
Selection
LED
USB Hub
Selection
LED
Computer
Connectors
Console
Speaker/MIC
ports
Console USB
Keyboard/
Mouse ports
USB Hub
ports
DC
Power
Console
DVI Ports

Instruction Manual
4
Hardware Installation
PC BIOS Notice
The following BIOS setup changes may be necessary for PC users.
1. In STANDARD CMOS, set HALT ON ERROR to ALL BUT KEYBOARD1.
2. In PNP AND PCI SETUP, set PNP OS INSTALLED to YES and set USB IRQ to ENABLED.
Please Note: The KVM provides USB keyboard and mouse switching from one
computer to the other. If you plan to share other pe¬ripherals (printer, scanner, Etc.)
using the built in USB HUB, it is recommend that the software for each device be shut
down prior to switching between computers.
Console Connection
Before installation, ensure that all devices and computers to be connected to the KVM
are powered o.
1. Connect one or two DVI monitor(s) to the Console’s DVI port.
2. Plug a USB keyboard and a USB mouse into the respective keyboard and mouse
ports pictured on the KVM console.
3. (Optional) Connect an audio device, and microphone to the respective speaker and
microphone ports pictured on the KVM console.
Computer Connection
1. Connect one or two DVI cables from the DVI out port(s) on each computer, to the
corresponding DVI monitor A, Monitor B in port(s) on the KVM.
2. Connect One USB A-B Cable from a USB-A port on each computer, to the
corresponding USB-B port on the KVM switch.
3. (Optional) Connect a 3.5 mm audio cable from the Microphone (pink), and the audio
(green), out ports on each computer to the corresponding microphone and audio in
port on the KVM switch.
4. Plug the power adapter into a wall outlet or other suitable power source. Connect
the opposite end to the port marked DC 9V on the KVM switch.
5. Power on each of the connected DVI monitors. Then Power up each of the
computers on at a time. After the computers are powered on the keyboard and
mouse will be recognized. The KVM switch is now ready to use.

Instruction Manual
5
Hardware Operation
There are two methods of switch operation for the KVM Switch: Front-Panel Push
Buttons, and Keyboard Hotkey Commands. Steps of operation for both are outlined
below.
Front-Panel Push Buttons
1. Press the front panel button that corresponds with the desired computer.
2. The desired computer’s Display(s) and keyboard and mouse are now active through
the KVM console.
Note: Binding, allows the user to choose if the Audio Equipment (audio device, and
microphone), and/or USB HUB control switches with the computers when the Front-
Panel Push Buttons are used for operation. Binding Preferences can be set using
Keyboard Hotkey Commands.
Keyboard Hotkey Commands
Keyboard Hotkey Commands allow the user to operate the KVM switch by using the
keyboard that is connected to the KVM console.
Each command is initiated by pressing the “Hotkey Command Key” twice. The “Hotkey
Command” By default the is set to [SCROLL LOCK]. However, it can be changed to any
of the following: [SCROLL LOCK], [CAPS], [ESC], [F12], [NUM LOCK].
To change the “Hotkey Command Key”
1. Press [ScrLk] + [ScrLk] + [H] , which will be followed by two beeps indicating the
KVM is ready to select a new “Hotkey Command Key”. Alternatively press and
hold down the last front-panel button (Button 2 on SV231DDUSB, Button 4 on
SV431DDUSB) until two beeps are heard. Then release the button.
2. Select and press the key you would like to use as the “Hotkey Command Key”. A
single beep for selection conrmation will be heard.
3. The new “Hotkey Command Key” can now be used to execute hotkey commands.
A complete list of available commands, are outlined in the Hotkey Command Table
below. Please note if the “Hotkey Command Key” has been changed, the new key will
need to be substituted for [ScLK] where referenced.

Instruction Manual
6
Hotkey Reference Chart
Command Hotkey Sequence Description
Select Active
Computer
<ScrLk>+<ScrLk>+<x>
(<x> = Port Number: 1, 2,
etc.)
Selects which port has
access to the keyboard/
mouse/monitor.
Select Audio/Mic
output
<ScrLk>+<ScrLk>+<Fy>
(<Fy> = Function key:
F5=Port 1, F6=Port 2, etc.)
Selects which port’s
speaker and microphone
output is active at the
console.
Bind computer and
Audio/ Mic control
(default)
<ScrLk>+<ScrLk>+<Q>
When either the “select
active computer” or
“select audio/mic output”
commands are executed,
both functions are
Unbind computer
and Audio/Mic
output control
<ScrLk>+<ScrLk>+<W>
Computer control and
Audio/Mic output control
can be assigned to dierent
ports at the same time.
Select next/previous
port
<ScrLk>+<ScrLk>+< >
or< >
Selects the next (up arrow
key) or previous (down
arrow key) numbered port
for control.
Select previous port <ScrLk> + <ScrLk> +
<BackSpace>
Selects the most recent
previously active port
Beep sound on/o <ScrLk>+<ScrLk>+<B> Enables/disables audible
responses from the KVM.
Dene new hotkey
sequence
<ScrLk>+<ScrLk>+<H>+<y>
(<y>= Scroll Lock, Caps Lock,
ESC, F12 or Num Lock)
Change the standard
<ScrLk> hotkey to a new
value (see “Hotkey Control”
for more info).

Instruction Manual
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Auto-scan <ScrLk>+<ScrLk>+<S>
Automatically cycle
through active ports in
sequence every 10 seconds.
Auto-scan with
programmable
delay
<ScrLk>+<ScrLk>+<S>+<z>
(<z>= 0~9: where 1=10sec,
2=20sec…9=90sec,
0=100sec)
Auto-scan with a custom
set delay time.
Stop Auto-scan Press any key on keyboard Terminate Auto-scan
activity.
1. The USB keyboard hotkeys allow you faster and broader control of KVM switching
operation, in addition to the front-panel buttons. If you have congured a hotkey
preceding sequence other than two consecutive scroll locks, you should change
your hotkey sequence accordingly.
2. When the binding of PC, Audio and Mic switching is enabled by the hotkey
sequence: ScrLk + ScrLk + Q, any PC, audio and mic switching are bound together.
To remove this binding, use the hotkey sequence: ScrLk +ScrLk + W
LED Information
Green LED indicates PC port status: solid green – active port; flashing green – PC
not connected;
Red LED indicates hub port control status: solid red – that PC has the control of all
hub ports.

Instruction Manual
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Specications
Computers supported 2 (SV231DVIDDU), 4 (SV431DVIDDU)
Front panel push buttons 2 (SV231DVIDDU), 4 (SV431DVIDDU)
Automatic scan interval 10 - 60 seconds (in 5 second intervals)
Resolution supported 1920 x 1200 (digital), 2048 x 1536 (analog)
Computer peripheral
connector Monitor
USB Type B x 4
DVI-I x 8
SPEAKER Jack x 4
MIC Jack x 4
Console peripheral
connector monitor
USB Keyboard x 1
USB Mouse x 1
DVI-I x 2
SPEAKER Jack x 1
MIC Jack x 1
USB Hub (2 ports provided)
H x W x D (mm)
(in.)
253 × 100 × 66 mm
10 x 4 x 2.6”
Operation Temperature 0 ~ 40°C
Storage Temperature - 20 ~ 60°C
Humidity 0~90% RH, non-condensing

Instruction Manual
9
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 two 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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