StarTech.com StarView SV231USB User manual

USB Keyboard/Video/Mouse
Sharing Switch
User's Manual
SV431USB
SV231USB

Table of Contents
Introduction
Overview 1
Features 2
System Requirements
Console Side 3
Computer Side 3
Installation
PC BIOS Notice 4
Console Connection 5
Computer Connection 6
Operation
Front Panel Push Buttons 7
Rack Mount Kit 9
Appendices
Specifications 10
Troubleshooting 11
Other StarView Switches 13
Please read this manual thoroughly and
follow the Installation procedures to
prevent damage to the StarView or any
connecting devices.

1
Introduction
Overview
The StarView SV231USB and SV431USB, fully
compatible with USB specifications, are a combination of
USB KVM (Keyboard/Video/Mouse) switches and USB
peripherals sharing devices. With the SV231USB and
SV431USB, you can easily operate up to 2 or 4 PCs,
G3/G4 Macs, or iMacs respectively from the 1 USB
keyboard, 1 USB mouse, and 1 monitor saving you
space, time, equipment and money. Its peripheral
sharing function enables you to share more USB
peripherals among all computers.
Installation is easy as connecting USB A-B cables to the
computers and to the StarView switch. Computer
selecting is as easy as front panel button pressing. The
built-in USB hub ensures smooth switching from one
computer to the other. The StarView switches provide the
easiest way to manage multiple computers with USB
interface and share USB peripherals among computers.

2
Features
?Manage 2 or 4 PC, G3/G4 Macs, or iMacs from one
USB keyboard, mouse and monitor with the
SV231USB and the SV431USB respectively
?2 or 4 computers share up to 2 or 4 different USB
peripherals with the SV231USB and the SV431USB
?Front panel push buttons for easy computer selection
?No drivers needed for keyboard and mouse operation
?Supports keyboard and mouse plug-n-play
?High VGA resolution: 19230 x 1440
?Buzzer sounds for computer switching confirmation
?Front button Auto Scan activation
?Selectable Scan Time interval
?Supports the latest DDC2B VGA monitors
?Saves time, space, equipment and power
?USB self-powered operation
?No software required

3
System Requirements
Console Side
One VGA, SVGA or Multisync monitor
One USB keyboard
One USB mouse
Computer Side
Each USB enabled computer must be connected to the
StarView switch by:
One HDB15 male-to-female VGA cable or monitor
One USB A-B cable with Type-A and Type-B plug for
USB devices, as shown in figure 1.
figure 1:USB A-B cable
(Note: An optional HDB-15 to DB-15 VGA adapter is
required for Mac computer VGA ports)

4
Installation
PC BIOS Notice
The following BIOS setup changes are necessary for
PC users and not necessary for Mac users:
1. In STANDARD CMOS, set HALT ON ERROR to ALL
BUT KEYBOARD
2. 2. In PNP and PCI SETUP, set PNP OS
ONSTALLED to YES and set USB IRQ to ENABLED
Note: The StarView switch is applicable for USB
keyboard and mouse switching from one computer
to the other. If you plan to share other peripherals
such as a CCD camera, printer or scanner, it is
necessary to shut down the driver of the computer
before switching to another computer. Because port
switching is equivalent to unplugging the USB cable
from one computer and plugging it into another one,
some USB drivers check attached USB peripherals
all the time and do not accept plug-n-play functions.

5
Console Connection
Before installation, make sure all devices and computers
to be connected to the StarView switch have been
turned off.
Plug a monitor to the Console’s VGA port; plug a USB
keyboard and a USB mouse to any two of the Console’s
USB ports as shown in figure 2.
For SV431USB only: As an option, the Master
StarView is either SV431 or SV431D to be linked to
the SV431USB with a mini-DIN8 male-to-male cable.
The SV431USB can operate as USB-peripheral
sharing devices
Figure 2: Console Connection

6
Computer Connection
Use a HDB15 male-to-female cable to connect from a
computer’s VGA port to the StarView’s VGA port of the
PC side, as shown in figure 3.
Use a USB A-B cable to connect from the StarView’s
USB port on the corresponding computer (A connector is
the flat connector) as shown in figure 3.
Figure 3: Computer Connection

7
Operations
Front Panel
1. On-line LED and Selected LED:
When the LED turns green, the connected computer
is powered-on. When a computer is selected its
corresponding red LED illuminates.
2. Push buttons:
Each computer has a button associated with it on
the front panel for selection.
Auto Scan
Auto Scan automatically cans through computers one by
one in a fixed interval (see Scan Time below).
Note: keyboard or mouse is not operable during
Auto Scan.
Scan Time
It sets the scan interval for Auto Scan. The Scan Time
options are 3, 8, 15 and 30 seconds.
Note: Scan Time is automatically set to the default of 3
seconds when the KAG switch loses power.

8
For SV231USB
To activate the Auto Scan, press and hold the
pushbutton down for 2 seconds until you hear a long
beep followed by a short beep. To exit from it, tap the
pushbutton again.
To change the Scan Time interval, press and hold the
pushbutton for 4 seconds until you hear two long beeps.
By tapping the pushbutton each time, the SV231USB
responds with 1, 2, 3 or 4 beeps corresponding to 3, 8,
15 or 30 seconds respectively. Once set, leave the
SV231USB as it is and it will automatically return for
normal operation.
For SV431USB
To activate Auto Scan, press down front panel push
buttons “3” and “4” simultaneously. The port LED flashes
during Auto Scan. Auto Scan is effective for powered-on
computers only. To exit the Auto Scan mode, just tap any
one of the pushbuttons.
To change the Scan Time interval, press both front panel
buttons “1” and “2” simultaneously. The Sv431USB
beeps 1, 2, 3 or 4 times for Scan Time of 3, 8, 15 or 30
seconds respectively.

9
Rack Mount Kit for SV431USB (optional)
The figure below shows how to attach optional mounting
brackets and cable support to the SV431USB for
standard 19-inch rack cabinet.

10
Appendices
Specifications
SV431USB SV231USB
No. of computers supported 4 2
Front panel push button 4 1
Hot plug-and-play Yes
Automatic scan interval 3, 8, 15, 30 seconds
Cable Length (Max) 30M (100ft) for VGA
5M (15ft) for USB
Computer ON-LINE LED 4 2
Computer Selected LED 4 2
VGA 1920 x 1440, DDC2B
Computer peripheral connector
Monitor USBTypeBx4 HDB-15 male x 4 USBTypeBx4 HDB-15 male x4
Console peripheral connector
Monitor USBTypeAx4 HDB-15
female x 1
USBTypeAx3
HDB-15
female x1
H x W x D (mm)
(in)
size
44 x 220 x 130
1.7 x 8.7 x 5.1
Compact
40 x 124 x 70
1.6 x 4.9 x 2.7
Micro
Weight (g)
(oz.) 900 31.74 420 14.8

11
Troubleshooting
Ensure that all cables are well seated. Label the
cable for each computer to avoid confusion when
connected to the StarView switch.
The StarView switch has built-in power protection
that works automatically when needed. When it
works, USB communication halts and the only way
to restart the StarView switch properly is to remove
all power sources (USB patch cables and power
adapter), wait a few seconds, apply power sources
and start again.
Symptom Causes Solutions
Keyboard or
mouse does not
work
In Auto Scan,
keyboard and mouse
are not operable.
Too many keyboard
or mouse drivers
installed.
Press any front button to
select a computer, then
use the keyboard and
mouse.
Remove ALL
unnecessary keyboard
and mouse drivers.
Newly installed
USB device
does not work.
Improper device
driver.
Device consumes
too much power.
Device consumes
too much power
instantaneously.
Improper device
Re-install device driver.
The device should be
self-powered, add a
power adapter to the
device.
If the device does not
provide power jack, add
a power adapter of less

12
initialization.
When StarView
switch works under
self-power, i.e., no
power supply added,
it supports max of
100mA as per USB
spec.
than 1A current rating to
the StarView switch
Be sure the USB cable
is well seated to ensure
communication.
Remove all power
sources to the StarView
by unplugging all USB
A-B cables and the
power adapter; then
start all over again.
Select the computer by
pushbutton, restart the
computer and try again.
Computer
hangs up while
switching
computers.
Device initialization
takes too much time. Wait at least 5 seconds before computer
switching to ensure
proper USB
communication.
Turn off device driver
(not keyboard or mouse)
before computer
switching.
Auto Scan does
not switch PC
automatically
and StarView
beeps.
All PCs are off or
only one PC is
turned on. Scan
mode works for
power-on computers
only.
Turn computers on.

13
Other StarView Switches
Other high-performance StarView KVM switches
No OSD OSD model 2 Console –
OSD Model
2 port SV211K
SV231
4 port SV431
SV431H SV431D
8 port SV831 SV831D SV832D
16 port SV1631D SV1632D
-OSD: advanced On-Screen Display interface enabling
you to assign PC names, access PCs by the names.
Other features include programmable scan pattern,
password security, etc.
Limited Warranty
IN NO EVENT SHALL THE DIRECT VENDOR'S LIABILITY
FOR DIRECT OR INDIRECT, SPECIAL, INCIDENTIAL OR
CONSEQUENTIAL DAMAGES, LOSS OF PROFIT, LOSS OF
BUSINESS, OR FINANCIAL LOSS WHICH MAY BE CAUSED
BY THE USE OF THE PRODUCT EXCEEDS THE PRICE PAID
FOR THE PROCUDT.
The direct vendor makes no warranty or representation,
expressed or implied with respect to the contents or use of this
documentation, and especially disclaims its quality,
performance, merchantability, or fitness for any particular
purpose.
The direct vendor also reserves the right to revise or update the
product or documentation without obligation to notify any user of
such revisions or updates. For further information, please
contact your direct vendor.