2 or 4 Port Steel USB KVM Switch with
Audio and USB 2.0 Hub
SV231USBA
SV431USBA
*actual product may vary from photos
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
For the most up-to-date information, please visit: www.startech.com
Manual Revision: 05/01/2014
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 dierent 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
Table of Contents
Introduction ...........................................................................................1
Features ........................................................................................................................................................1
Package Contents ..................................................................................................................................... 1
System Requirements .............................................................................................................................. 1
Installation ..............................................................................................2
Technical Support ..................................................................................6
Warranty Information ............................................................................6
Instruction Manual
i
Introduction
Thank you for purchasing a StarTech.com USB desktop KVM switch with audio
switching. This product allows you to switch 2 or 4 computers (depending on the
model purchased) including the audio signal. Designed for today’s cutting edge
systems, it features native support for USB input devices and VGA video. You can save
space and improve productivity by sharing one console among multiple computers
without sacricing the quality of your video signal by using converters and adapters.
Features
• Natively supports USB peripherals and VGA video
• Also switches audio for a complete multimedia sharing solution
• Choice of congurable hotkey command sequence or front panel buttons for
control
Package Contents
• 1 x USB Desktop KVM Switch
• 1 x Power Adapter
• 1 x Instruction Manual
System Requirements
• Console: USB keyboard (1), USB mouse (1), VGA monitor(1), speakers (optional),
microphone (optional)
• Controlled systems: USB support, VGA video out, speaker out (optional),
microphone out (optional)
Additional cables required (not included): Each controlled computer will require a
USB Type A to Type B cable (1) and VGA switchbox cable (1) or StarTech.com 2-in-1
USB VM cable (1), optional 3.5 mm phono male-to-male sound cable for speakers and
microphone (2). See page 5 for StarTech.com part numbers for all required cables.
Instruction Manual
1
Installation
This section details how to connect your computers to the KVM switch. For best results,
ensure that all the computers to be controlled are located as close as possible to the
KVM switch and console peripherals (monitor, keyboard, mouse). This will reduce the
length of cabling required and reduces the chance of interference.
Installing the KVM Switch
Place the KVM switch in close proximity to the keyboard, mouse, and monitor you wish
to use as the console controls.
1. Connect the monitor to the VGA port under CONSOLE.
2. Connect a USB keyboard to the Type A connector under CONSOLE, marked with a
keyboard icon.
3. Connect a USB mouse to the Type A connector under CONSOLE, marked with a
mouse icon.
4. Connect speakers to the green 3.5mm phono connector under CONSOLE (optional).
5. Connect a microphone to the pink 3.5mm phono connector under CONSOLE (optional).
6. Connect up to 2 other USB devices to the ports marked USB HUB (optional).
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. (This step is optional, and
is required only if you will be using the KVM switch as a USB hub for other devices as
described in step 7. If you are not connecting devices to the USB HUB ports, the KVM
switch will function as a self-powered device and does not require the power adapter.)
Connecting computers to the KVM Switch
This section describes how to connect a computer you wish to control to the KVM switch.
Repeat these steps for each computer you wish to connect.
7. Remove any existing keyboards, mice, monitors, speakers, and microphones from
the computer.
8. Using a KVM switchbox cable, connect one end to the video out connector on
the computer. (This will be the same connector from which you disconnected the
monitor in step 1, if applicable.) Connect the opposite end to the video connector
on the KVM switch that corresponds to the computer number you wish to use for
that system (marked PC 1 ~ PC 2 or PC 1 ~ PC 4 as applicable).
Instruction Manual
2
9. Using a USB Type A to Type B cable, connect the “A” (at) end to an available
USB port on the computer. Connect the opposite end to the “B” (D-shaped) USB
connector on the KVM switch that corresponds to the computer number you wish
to use for that system (directly under the monitor connection in step 2). This will
provide both keyboard and mouse access to that system.
10.Optional:You can use 3.5mm male-to-male phono speaker cable to connect
the speaker and/or microphone outputs on the computer to the corresponding
connectors on the KVM switch, located under the monitor connector that
corresponds to that computer on the KVM. Most computers have sound and
microphone connectors that are color-coded to the standard used on the KVM
switch: green for speakers, pink for microphone. See the documentation for the
computer for assistance, if needed.
Using the KVM Switch
Green LED (solid) = Active Computer
Green LED (ashing) = No Powered Computer on that Port
Red LED (solid) = Active Control of USB Hub
Button = Switch control to that port
The KVM switch oers two convenient ways to switch console control of the attached
computers. The rst is by using the buttons on the front panel to select which
computer is active. The second is using keyboard hotkey combinations, which also
allow you to adjust several conguration options on the KVM. The reference chart on
the next page describes the hotkey commands and their options in detail.
Note: If your computer is congured to use power-saving features (i.e. auto-standby
after inactivity), you may experience intermittent diculty using the KVM switch.
For optimal performance we recommend conguring your computer’s BIOS setup
software to enable or disable (as applicable) the following options:
• Enable “USB Legacy Support”
• Enable “USB Keyboard and Mouse to bring computer out of standby”
• Disable “Power Saving Mode” for the USB hub
The names and location of these and similar options may vary from computer to
computer. Consult your manufacturer’s documentation for information on accessing
and modifying the BIOS setup if necessary.
Instruction Manual
3
Keyboard Hotkey Command Reference Chart
Command Name Hotkey Sequence Description
Switches access to the computer connected to the
Select active computer [ScrLk]+[ScrLk]+[x]
Select Audio/Mic
output
Bind computer and
Audio/Mic control
(default)
Unbind computer
and Audio/Mic output
control
Select next/previous
port
Select previous port [ScrLk]+[ScrLk]+[BkSp] Selec ts the most recent previously active port.
Beep sound on/o [ScrLk]+[ScrLk]+[B] Enables/Disables audible responses from the KVM.
Dene new Hotkey
sequence
Autoscan [ScrLk]+[ScrLk]+[S]
Autoscan with
programmable display
[ScrLk]+[ScrLk]+[Fy]
[ScrLk]+[ScrLk]+[Q]
[ScrLk]+[ScrLk]+[W ]
[ScrLk]+[ScrLk]+[ , ]
[ScrLk]+[ScrLk]+[H]+[y]
[ScrLk]+[ScrLk]+[S]+[z]
corresponding port number on the KVM.
([x]= a number on the keyboard)
Switches which port’s speaker and microphone
output is active at the console
([Fy] = Function key: F5=Port 1, F6=Port 2, etc.)
When either the select active computer or
select audio/mic output control commands are
executed, both functions are switched to the
The computer control and USB hub control can be
executed separately; KVM control and Audio/Mic
output control can be assignedto dierent ports
Selects the next (up arrow key) or previous (down
Change the standard [ScrLk] hotkey to a new
Automatically switch active ports in sequence
every 10 seconds. (press any key to cancel)
Autoscan with a delay other than 10 seconds (see
selected port.
at one time.
arrow key) numbered port for control
value (see below)
below). Press any key to cancel.
Instruction Manual
4
Binding/Unbinding control: By default the switch will automatically switch audio
control to the KVM port you select to control (bound). If you choose to “unbind”
control, you can assign control of the audio to a port other than the active computer
using the commands above.
Valid hotkey sequences: If you enter the “Dene new hotkey sequence” command
([ScrLk]+[ScrLk]+[H]+[y] the value of [y] replaces the [ScrLk]+[ScrLk] command with
one of the following:
[CapsLk] = [CapsLk]+[CapsLk]
[Esc] = [Esc]+[Esc]
[F12] = [F12]+[F12]
[NumLk] = [NumLk]+[NumLk]
[ScrLk] = [ScrLk]+[ScrLk] (if another key sequence has been enabled)
Programmable Autoscan delay time: [z] can be any one of the following values: 1=10
sec., 2=20 sec. through 9=90 sec., 0=100 sec. Note: Apple computers will need to be
programmed using an IBM-compatible keyboard that has a Scroll Lock key.
Instruction Manual
5
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
ocers, directors, employees or agents) for any damages (whether direct or indirect,
special, punitive, incidental, consequential, or otherwise), loss of prots, 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.
Instruction Manual
6
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