StarTech.com SV431DUSBU User manual

Rackmount USB KVM
Switch
4/8/16 - Port 1U Rackmount USB
KVM Switch with OSD
SV431DUSBU
SV831DUSBU
SV1631DUSBU
Instruction Manual
Manual Revision:02/04/2011
For the most up-to-date information, please visit www.startech.com

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 off 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 different 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.

i
Table of Contents
Introduction..................................................................... 1
Packaging Contents.....................................................................1
System Requirements .................................................................1
Installation....................................................................... 2
Hardware Installation...................................................................2
Cascaded configurations.............................................................3
Operation......................................................................... 5
Push Button controls ...................................................................5
OSD (On Screen Display) Operation...........................................6
Hot-key commands......................................................................11
Change Leading Hotkey ..............................................................13
Specifications.................................................................. 15
Technical Support........................................................... 16
Warranty Information...................................................... 16

1
Introduction
Packaging Contents
• 1 x KVM Switch
• 8 x USB VGA KVM Cable (SV831DUSBUK only)
• 16 x USB VGA KVM Cable (SV1631DUSBUK only)
• 1 x Power Adapter
• 1 x Foot Pad (set)
• 2 x Rackmount Bracket (8 port and 16 port only)
• 1 x User Manual
System Requirements
• USB compatible 3 button wired mouse
• USB compatible 104-key wired keyboard
• VGA enabled display device
• StarTech.com KVM cables
• VGA enabled computer systems

2
Installation
Hardware Installation
WARNING: Prior to installation, please ensure that all computers and
KVM switch(es) are powered down.
Console Connection
The SVxxxDUSBU series of KVM switches are designed to use USB
console connections only. A USB compatible keyboard and mouse
and VGA monitor must be used for the local console. A USB keyboard/
mouse combo device that uses a single USB connector may also be
used, but must be connected to the USB Keyboard port.
Connecting Computer to the KVM Switch
To connect a computer to the KVM switch, use the appropriate
StarTech.com KVM cable to connect from one of the PC ports located
on the rear panel of the KVM switch to the keyboard/mouse and VGA
video ports on the computer.
KVM
cable
*SV1631DUSBU shown
VGA
Monitor
USB
keyboard
USB
mouse
*SV1631DUSBU shown

3
Cascaded congurations
NOTE: The Master KVM switch must have equal or more PC ports
than that of the Slave KVM switches. For example, if an 8-port switch is
the Master, an 8-port or 4-port switch can be a Slave, but not a 16-port
switch.
The ports labelled PC 1 - PC 8 can be connected to either a computer
or a Slave KVM switch’s CONSOLE port. On a 16-port KVM switch, the
ports marked PC A - PC H can only be connected to computers. Use
only the appropriate StarTech.com KVM cables to connect the Master
KVM switch’s PC ports and Slave KVM switch’s CONSOLE port:
The maximum number of computers controlled by a Master/Slave
configuration with all 8-port KVM switches used is 64, with 8 Slaves
and each Slave connecting to 8 computers:
The maximum number of computers controlled in a Master/Slave
configuration with all 16-port KVM switches used is 136, with 8 units
of 16-port Slaves (to PC 1 - PC 8) and each Slave connected to 16
computers, plus 8 more computers connected directly to the Master (to
ports PC A - PC H):
After the connection has been completed, please re-activate the OSD
menu to verify that the Master recognizes the Slaves. A triangle mark
(►) is placed next to the right of the channel name indicating that the
port is connected to a Slave, not a computer. A number to the left of the
triangle mark indicates the Slave model, i.e. ‘8’ for an 8-port switch.
KVM cables
*SV1631DUSBU shown

4
NOTE: A device (computer or KVM switch) at any ‘PC x’ port can be
changed at any time after initial power-up. If you change any one of the
PC 1 to PC 8 port connections from a computer to a Slave KVM switch
or vice versa, or replace the devices of a port, the OSD will update this
change the next time it is activated.

5
Operation
You may select a computer by pressing the front panel push button
directly, by issuing hot-key commands or by activating the OSD
window. The front panel indicator changes to reflect the computer
port selected (red) and whether the port is connected to a powered
computer (green). The indicator flashes red when it is in either Auto
Scan or Manual Scan mode.
Push Button controls
To select control of an attached computer, press the front panel button
that corresponds with the assigned computer number. For 16 port
models, 1 to 8 represents the lower 8 ports, while A to H indicates the
higher ports. Ports 1 and A share the same pushbutton, as do 2 and B,
3 and C, etc.
EXAMPLE: If port 1 is already selected and you wish to switch to Port
A, tap the shared pushbutton once to select Port A. If Port 1 is not
selected, press and hold pushbutton 1 for two seconds to select Port A.
K/M Reset
K/M Reset resolves the majority of problems developed by keyboard
and/or mouse device replacement or configuration changes. Press
down buttons 1 and 2 simultaneously for 2 seconds to reconfigure
the whole system without having to turn off the KVM switch or any
attached computers.
Auto Scan
This KVM switch provides an easy to use feature to start Auto
Scanning. To use this function, simultaneously press buttons 7 and
8 and hold for two seconds. (SV431DUSBU uses buttons 3 and 4 to
launch this function).

6
OSD (On Screen Display) Operation
By hitting the left <CTRL> key twice within two seconds, you may see
the ’Hotkey Menu’ if it is enabled (an OSD option). Or, by hitting the
left <CTRL> key three times within two seconds, you will see a ’KVM
MENU’ screen showing a list of the computers with corresponding
channel addresses, names and status.
The channel address (port number) of the currently selected computer
is displayed in red, same as the front indicator, to the right of the OSD
title ’KVM MENU’.

7
The color of a device name is green if it has power and is ready for
selection (its corresponding front panel indicator is green). The color is
white if it has no power. The OSD menu updates when it is activated.
Use the <UP> and <DOWN> arrow keys to highlight a computer and
the <ENTER> key to select it. Or, you may press <ESCAPE> to exit
OSD and remove the OSD menu from the display; the status window
returns to the display and indicates the currently selected computer or
operating status.
A triangle mark ( ►) to the right of a name indicates the port is
cascaded to a Slave; the number at the left of the triangle mark shows
the number of ports the Slave has, i.e. 8 for SV831DUSBU. The
<ENTER> key brings you one level down and another screen pops
up listing the names of the computers on that Slave. The name of the
Slave will be shown at the upper right corner of the OSD menu. It is
useful to group computers and still be able to see the group name.
An eye mark (N) to the right of a name indicates the computer is
selected to be monitored in Scan mode. In OSD, this mark can be
switched on or off by function key <F2>.
Press the <ESCAPE> key to exit the OSD and to return to the selected
computer, The computer name is also shown on the screen.
Function key <F1>: To edit the name entry of a computer or a Slave.
First, use the <UP> and <DOWN> arrow keys to
highlight a channel then press <F1> followed by
name entry. Valid characters are ‘A’~’Z’, ‘0’~’9’ and
the dash character. Lowercase letters are converted
to uppercase ones. Press the <BACKSPACE> key
to delete a letter one at a time. Nonvolatile memory
stores all name entries until you change, even if the
unit is powered down.
Function key <F2>: To switch the eye mark (N) of a computer on or off.
First, use the <UP> and <DOWN> arrow keys to
highlight it, then press <F2> to switch its eye mark
on or off. If Scan Type is ’Ready PC + N’, only the
power-on and eye mark selected computers will be
displayed sequentially in Scan mode.

8
Function key <F3>: To lock a device (a computer or a Slave) from
unauthorized access, use Security. Security
is effective for only one device (a computer or
a Slave). To lock a device, use the <UP> and
<DOWN> arrow keys to highlight it, then press
<F3>. Now, enter up to 4 characters (‘A’~’Z’, ‘0’~’9’,
‘-’) followed by <ENTER> as new password. A
Security enabled device is marked with a lock
(Ï) following its channel number. To permanently
disable the security function from a locked device,
highlight it, press <F3> then enter the password.
If you want to access the locked device temporarily, simply highlight
it and press <ENTER>, the OSD will ask you for the password. After
entering the correct password, you are allowed to use the device. This
device is automatically re-locked once you switch to another port.
During Scan mode, OSD skips the security-enabled device.
NOTE: If you forget the password, the only way to permanently erase
all of the passwords is to: For SV831DUSBU and SV1631DUSBU,
press and hold the 1 and 2 front panel buttons, then hold 7 and 8.
Release 7 and 8, then release 1 and 2. For SV431DUSBU, press 3 and
4 instead of 7 and 8.
Function key <F4>: More functions are available by hitting <F4>. A
new screen pops up displaying more functions as
described below. Most of them are marked with a
triangle ( ►) indicating there are options to choose
from. Using the <UP> and <DOWN> arrow keys,
select the functions and press <ENTER>. Available
options will be shown in the middle of the screen.
Again, using the <UP> and <DOWN> arrow keys to
view options then press <ENTER> to select it. You
can press <ESCAPE> to exit at any time.
Auto Scan
In this mode, the KVM Switch automatically switches from one
power-on computer to the next, sequentially, in a fixed interval.
During AutoScan mode, the OSD displays the name of the selected
computer.

9
When Auto Scan detects any keyboard or mouse activity, it suspends
the scanning till activity stops; it then resumes with the next computer
in sequence. To abort Auto Scan mode, press the left <CTRL> twice,
or, press any front button. Scan Type and Scan Rate set the scan
pattern. Scan Type (<F4>: More\Scan Type) determines if scanned
computers must also be eye mark selected. Scan Rate(<F4>: More\
Scan Rate) sets the display interval when a computer is selected
before selecting the next one.
Manual Scan
Scan through power-on computers one by one by keyboard control.
You can type (<F4>: More\Scan Type) to determine if scanned
computers must also be eye mark selected. Press the <UP> arrow
key to select the previous computer and the <DOWN> arrow key to
select the next computer. Press any other key to abort Manual Scan
mode.
Scan Type:
Ready PC + N:In Scan mode, scans through power-on computers
and those with the eye mark on the selected ports.
Ready PC: In Scan mode, scans through all power-on computers.
Nonly: In Scan mode, scans through any selected computer
regardless of computer power status with an eye mark.
Scan Rate: Sets the duration of a computer displayed in Auto Scan
mode. The options are 3 seconds, 8 seconds, 15 seconds and 30
seconds. The non-volatile memory stores the Scan Rate setting.
Hotkey Menu: When you hit the left <CTRL> key twice within two
seconds, the Hotkey Menu appears displaying a list of hot-key
commands if this option is On.
The Hotkey Menu can be turned Off if you prefer not to see it when
the left <CTRL> key is hit twice. The non-volatile memory stores the
Hotkey Menu setting.

10
CH Display:
Auto Off: After you select a computer, the channel address and
name of the computer will appear on the screen for 3 seconds then
disappear automatically.
Always On: The channel address and name of a selected computer
and/or OSD status displayed on the screen all the time. The non-
volatile memory stores the CH Display setting.
Position: The position of the selected computer name and/or OSD
status displayed on screen during operation. The actual display
position shifts due to different VGA resolution, the higher the
resolution the higher the display position. The nonvolatile memory
stores the Position setting.
Upper Left, Upper Right
Middle
Lower Left, Lower Right
Country Code for Sun:
Sun keyboards of different languages have different layouts. The KVM
switch is able to emulate a Sun keyboard for a specific language type
or country such as Arabic, Belgian, US, Yugoslavia, etc. Select the
proper country code that matches all of your Sun computers.
NOTE: The country code must be set prior to powering up the Sun
computer. Not performing this step prior to power-up could cause the
system to malfunction.
Max. Resolution: It supports widescreen, and you can adjust the
monitor resolution under this sub-menu. The following selections are
available: 1024x768, 1280x1024, 1600x1200, 1920x1440
Widescreen resolutions: 1920x1080, 1366x768, 1280x720, 854x480
and “DDC2B Disable”.
Function Key <F5>: To switch the Sun mark of a port on or off indicating
the computer is a Sun server as shown in Figure
12. Sun servers have more keys on the keyboard
than a PC. When a Sun-marked port is selected,
the KVM Switch starts to translate the keys from a
PC keyboard to a Sun keyboard. See the section
entitled Sun Keyboard Mapping for further detail.

11
NOTE: It is unnecessary to switch the Sun mark ON or OFF if an
authentic Sun keyboard is being used on the console. In other words,
you must ensure that the Sun-marked port has not been selected if you
are already using a Sun keyboard.
With different types of keyboard and computer, the Sun Mark must be
set up in compliance with the following instruction:
Keyboard Type Computer Type Sun Mark
USB (non-Sun) PC/Mac No
USB (non-Sun) Sun Yes
USB (Sun keyboard) PC/Mac No
USB (Sun keyboard) Sun Yes
ESC: To exit the OSD, press the <ESCAPE> key
Hot-key commands
Hot-key command is a short keyboard sequence used to select
a computer, to activate computer scan, etc. StarView interprets
keystrokes followed by one or two more keystrokes. A built-in buzzer
generates a high-pitch beep for a correct hotkey command, otherwise,
one low-pitch beep for an error and the bad key sequence will not be
forwarded to the selected computer.

12
The short form hotkey menu can be turned on as an OSD function
(<F4>:More\Hotkey Menu) every time the left <CTRL> is pressed twice.
NOTE: Left <CTRL>: refers to the Control key on the left side of the
keyboard.
1~8/A~H: refers to the number keys ‘1’~’8’ in the upper row of the
keyboard and character keys ‘A’ ~ ‘H’. Do not use the keypad at the
right of the keyboard.
To select a computer by hotkey command, you must know its port
number, which is determined by the KVM Switch connection. For a
computer connected to a Slave, two characters represent its port.
The first character is the port number of the Master unit (1~8) and the
second one is the port number of the Slave (1~8 or A~H). Please note
that only the Master’s ‘PC1’ ~ ‘PC8’ ports can be connected to a Slave.
EXAMPLES:
Left <CTRL> , Left <CTRL>, 7 : Selects a computer connected to port
7 of the Master.
Left <CTRL> , Left <CTRL> 6, C : Selects a computer connected to
port C of a Slave connected to port 6 of the Master.
Auto Scan
In this mode, the KVM Switch automatically switches from one
power-on computer to the next, sequentially, in a fixed interval.
During AutoScan mode, the OSD displays the name of the selected
computer.
Left <CTRL>, Left <CTRL>, F1
When Auto Scan detects any keyboard or mouse 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. To abort Auto Scan mode, press the left <CTRL>
key twice.
NOTE: Scan Type determines whether an eye-marked computer is to
be displayed during Auto Scan.

13
Manual Scan enables you to manually switch back and forth between
the powered computers:
Left <CTRL>, left <CTRL>, F2
Press the <UP> arrow key to select the previous computer and the
<DOWN> arrow key to select the next computer. Press any other key
to abort Manual Scan mode.
NOTE: Scan Type determines whether an eye-marked computer is to
be displayed during Auto Scan.
To adjust Scan Rate, which sets the duration before switching to the
next computer in Auto Scan:
Left <CTRL>, Left <CTRL>, F3
The switch will beep one to four times indicating the scan interval of 3,
8, 15 and 30 seconds respectively.
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>

14
Sun/Mac Keyboard Mapping
The KVM Switch emulates a Sun Keyboard when a computer is
marked with a Sun, in the OSD menu by Function Key <F5>. A Sun
keyboard has more keys than a standard PC keyboard. These extra
keys are simulated by tapping the Right <CTRL> button, which is
normally located on the right lower part of the keyboard, followed by
one of the function keys on the general keyboard (i.e. combo key). For
example, tap the Right <CTRL> key, and then tap the function key F7
to activate Open for a Sun computer.
NOTE: For older Sun Operating Systems, the switch does not support
the LowPower option under Power Off Select.
For keystroke emulation of Sun/Mac computers, please refer to the
above chart and conduct the following two examples:
Stop A function in Sun: Press right <CTRL> and release, then within
two seconds press F1 and A in sequence.
Help function in Sun: Press right <CTRL> and release, then within 2
seconds, press H.

15
Specications
SV431DUSBU SV831DUSBU SV1631DUSBU
Number of Ports 4 8 16
Console Connectors 1 x DE-15 VGA female
2 x USB type A
Computer (PC)
Connectors - Per Port 1 x DE-15 PC Connector female
Rack Mountable Yes (Optional for SV431DUSBU)
Rack Mount Height 1U
Switching Methods Hot-key, Push Button and OSD
LEDs 4 x Power/Active 8 x Power/Active 16 x Power/Active
Front Push Buttons 4 x Push Button 8 x Push Button 8 x Push Button
Maximum Video
Resolution 1920x1440
On Screen Display
(OSD) Yes
Cascadable Yes
Maximum Number of
Cascaded Computers 16 64 136
Operating
Temperature 5oC to 40oC
Storage Temperature -20oC to 60oC
Humidity 80% RH
Power Adapter 9-12VDC, 500mA(min.)
Dimensions
220.0mm x
130.0mm x
44.0mm
438.0mm x
180.0mm x
44.0mm
438.0mm x
180.0mm x
44.0mm
Weight 1.5kg 2.9kg 3.1kg

16
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.
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 officers, directors, employees or agents) for any damages
(whether direct or indirect, special, punitive, incidental, consequential, or
otherwise), loss of profits, 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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