StarTechcom Switch SV231USB User Manual

USB Keyboard/Video/Mouse  
Sharing Switch  
User's Manual  
SV431USB  
SV231USB  
 
Table of Contents  
Introduction  
Overview  
Features  
1
2
System Requirements  
Console Side  
Computer Side  
3
3
Installation  
PC BIOS Notice  
Console Connection  
Computer Connection  
4
5
6
Operation  
Front Panel Push Buttons  
Rack Mount Kit  
7
9
Appendices  
Specifications  
Troubleshooting  
Other StarView Switches  
10  
11  
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  
Front panel push button  
Hot plug-and-play  
4
4
2
1
Yes  
Automatic scan interval  
Cable Length (Max)  
3, 8, 15, 30 seconds  
30M (100ft) for VGA  
5M (15ft) for USB  
Computer ON-LINE LED  
Computer Selected LED  
VGA  
4
4
2
2
1920 x 1440, DDC2B  
Computer peripheral connector USB Type Bx4 USB Type Bx4  
Monitor HDB-15 male x 4 HDB-15 male x4  
Console peripheral connector USB Type Ax4 USB Type Ax3  
Monitor  
HDB-15  
HDB-15  
female x 1  
female x1  
H x W x D (mm)  
(in)  
44 x 220 x 130 40 x 124 x 70  
1.7 x 8.7 x 5.1 1.6 x 4.9 x 2.7  
size  
Weight (g)  
(oz.)  
Compact  
900  
31.74  
Micro  
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  
In Auto Scan,  
Press any front button to  
mouse does not keyboard and mouse select a computer, then  
work are not operable. use the keyboard and  
Too many keyboard mouse.  
or mouse drivers  
installed.  
Remove ALL  
unnecessary keyboard  
and mouse drivers.  
Newly installed Improper device  
USB device driver.  
Re-install device driver.  
The device should be  
self-powered, add a  
power adapter to the  
device.  
does not work. Device consumes  
too much power.  
Device consumes  
too much power  
If the device does not  
provide power jack, add  
a power adapter of less  
instantaneously.  
Improper device  
 
12  
initialization.  
than 1A current rating to  
the StarView switch  
When StarView  
switch works under Be sure the USB cable  
self-power, i.e., no is well seated to ensure  
power supply added, communication.  
it supports max of  
Remove all power  
100mA as per USB sources to the StarView  
spec.  
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  
Device initialization Wait at least 5 seconds  
hangs up while takes too much time. before computer  
switching  
switching to ensure  
proper USB  
computers.  
communication.  
Turn off device driver  
(not keyboard or mouse)  
before computer  
switching.  
Auto Scan does All PCs are off or  
not switch PC only one PC is  
automatically turned on. Scan  
and StarView mode works for  
Turn computers on.  
beeps.  
power-on computers  
only.  
 
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  
SV831  
SV431D  
8 port  
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.  
 

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