KV9612A
KV9614A
ServSwitch DT Series USB/DVI/Audio KVM Switches
Control up to two or four PCs, or G3/G4 Mac or Mac Pro computers
from a single console (USB keyboard, USB mouse, and DVI [Digital Visual
Interface] monitor, plus audio).
Share two peripherals between two or four computers.
Include a built-in hub.
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500) •
FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax
724-746-0746 • Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence,
Customer
Support
Information
PA 15055-1018
•
•
E-mail: [email protected]
FCC and NOM Statements
FEDERAL COMMUNICATIONS COMMISSION AND
INDUSTRY CANADA RADIO FREQUENCY INTERFERENCE STATEMENTS
This equipment generates, uses, and can radiate radio-frequency energy,
and if not installed and used properly, that is, in strict accordance with the
manufacturer’s instructions, may cause interference to radio communication.
It has been tested and found to comply with the limits for a Class A computing
device in accordance with the specifications in Subpart B of Part 15 of FCC rules,
which are designed to provide reasonable protection against such interference
when the equipment is operated in a commercial environment. Operation of
this equipment in a residential area is likely to cause interference, in which case
the user at his own expense will be required to take whatever measures may be
necessary to correct the interference.
Changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
This digital apparatus does not exceed the Class A limits for radio noise
emission from digital apparatus set out in the Radio Interference Regulation
of Industry Canada.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant
les limites applicables aux appareils numériques de la classe A prescrites dans le
Règlement sur le brouillage radioélectrique publié par Industrie Canada.
Normas Oficiales Mexicanas (NOM)
Electrical Safety Statement
INSTRUCCIONES DE SEGURIDAD
1. Todas las instrucciones de seguridad y operación deberán ser leídas antes
de que el aparato eléctrico sea operado.
2. Las instrucciones de seguridad y operación deberán ser guardadas para
referencia futura.
3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de
operación deben ser respetadas.
4. Todas las instrucciones de operación y uso deben ser seguidas.
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2- and 4-Port ServSwitch DT Series USB/DVI/Audio KVM Switches
5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo,
cerca de la tina de baño, lavabo, sótano mojado o cerca de una alberca,
etc.
6. El aparato eléctrico debe ser usado únicamente con carritos o pedestales
que sean recomendados por el fabricante.
7. El aparato eléctrico debe ser montado a la pared o al techo sólo como sea
recomendado por el fabricante.
8. Servicio—El usuario no debe intentar dar servicio al equipo eléctrico más allá
lo descrito en las instrucciones de operación. Todo otro servicio deberá ser
referido a personal de servicio calificado.
9. El aparato eléctrico debe ser situado de tal manera que su posición no
interfiera su uso. La colocación del aparato eléctrico sobre una cama, sofá,
alfombra o superficie similar puede bloquea la ventilación, no se debe
colocar en libreros o gabinetes que impidan el flujo de aire por los orificios
de ventilación.
10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor
como radiadores, registros de calor, estufas u otros aparatos (incluyendo
amplificadores) que producen calor.
11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del
tipo descrito en el instructivo de operación, o como se indique en el
aparato.
12. Precaución debe ser tomada de tal manera que la tierra fisica y la
polarización del equipo no sea eliminada.
13. Los cables de la fuente de poder deben ser guiados de tal manera que no
sean pisados ni pellizcados por objetos colocados sobre o contra ellos,
poniendo particular atención a los contactos y receptáculos donde salen
del aparato.
14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las
recomendaciones del fabricante.
15. En caso de existir, una antena externa deberá ser localizada lejos de las
lineas de energia.
16. El cable de corriente deberá ser desconectado del cuando el equipo no sea
usado por un largo periodo de tiempo.
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NOM Statement
17. Cuidado debe ser tomado de tal manera que objectos liquidos no sean
derramados sobre la cubierta u orificios de ventilación.
18. Servicio por personal calificado deberá ser provisto cuando:
A: El cable de poder o el contacto ha sido dañado; u
B: Objectos han caído o líquido ha sido derramado dentro del aparato; o
C: El aparato ha sido expuesto a la lluvia; o
D: El aparato parece no operar normalmente o muestra un cambio en su
desempeño; o
E: El aparato ha sido tirado o su cubierta ha sido dañada.
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2- and 4-Port ServSwitch DT Series USB/DVI/Audio KVM Switches
TRADEMARKS USED IN THIS MANUAL
Black Box, the Double Diamond logo, and ServSwitch are trademarks or regis-
tered trademarks of BB Technologies, Inc.
Linux is a registered trademark of Linus Torvalds.
IntelliMouse, Microsoft, Windows, Windows NT, and Windows Vista are either
registered trademarks or trademarks of Microsoft Corporation in the United
States and/or other countries.
Mac is a registered trademark of Apple Computer, Inc.
Any other trademarks mentioned in this manual are acknowledged to be the
property of the trademark owners.
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Table of Contents
Chapter
Page
1. Specifications ..............................................................................................6
2. Overview ..............................................................................................7
2.1 Introduction........................................................................................7
2.2 Features ..............................................................................................7
2.3 Components.......................................................................................8
2.3.1 KV9612A Front Panel ............................................................8
2.3.2 KV9612A Rear Panel .............................................................9
2.3.3 KV9614A Front Panel ..........................................................10
2.3.4 KV9614A Back Panel...........................................................11
2.4 What’s Included................................................................................12
2.5 What You’ll Need to Supply..............................................................12
3. Installation ............................................................................................13
3.1 ServSwitch Placement.......................................................................13
3.2 Hardware Installation........................................................................14
3.2.1 Connecting the Console Keyboard, Mouse, and Monitor ...14
3.2.2 Connecting the Computers.................................................15
3.2.3 Initial Power On...................................................................16
4. Operation
............................................................................................17
4.1 Powering Up the System...................................................................17
4.2 Selecting Computers Using Front-Panel Buttons...............................17
4.3 Selecting Computers Using Hotkey Commands................................17
4.4 Alternate Hotkey Commands............................................................19
4.5 Function Button (4-Port Only)...........................................................19
Appendix. Troubleshooting...............................................................................21
A.1 Problems/Causes/Solutions...............................................................21
A.2 Calling Black Box...............................................................................23
A.3 Shipping and Packaging....................................................................23
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2- and 4-Port ServSwitch DT Series USB/DVI/Audio KVM Switches
1. Specifications
Hotkeys: Yes
Resolution: 1920 x 1200 @ 60 Hz
Supported Operating Systems: Windows® 98 SE/Me/2000/XP, Windows
Vista®, Mac® OS X, Linux®
User Controls: KV9612A: (1) port button;
KV9614A: (4) port buttons (labeled 1–4) also used for Scan time buttons
and AutoScan, (1) function button
Connectors: Both models: (1) Power;
KV9612A: Console end: (1) DVI-I, (4) USB Type A, (2) 3.5-mm jacks for audio
(speaker and microphone);
Computer end: (2) DVI-I, (2) USB Type B, (4) 3.5-mm jacks for audio
(speaker and microphone);
KV9614A: Console end: (1) DVI-I, (4) USB Type A, (2) 3.5-mm jacks for audio
(speaker and microphone);
Computer end: (4) DVI-I, (4) USB Type B, (8) 3.5-mm jacks for audio
(speaker and microphone)
Indicators: KV9612A: (2) Port, (2) Power;
KV9614A: (4) Port, (4) Power for CPUs, (1) Power for switch
Temperature Tolerance: Operating: +32 to +104° F (0 to +40° C);
Storage: -4 to +140° F (-20 to +60° C)
Power: From the interface or via a 9-12-VDC, 1.5-A power supply (included)
Size: KV9612A: 1.6"H x 4.9"W x 2.8"D (4 x 16 x 7 cm);
KV9614A: 1.7"H x 8.7"W x 5.1"D (4.3 x 22 x 12.8 cm)
Weight: KV9612A: 1.5 lb. (0.7 kg)
KV9614A: 2.2 lb. (1 kg)
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Chapter 2: Overview
2. Overview
2.1 Introduction
The 2- or 4-Port ServSwitch™ USB/DVI/Audio KVM Switch enables you to con-
trol up to two or four PCs, or G3/G4 Mac or Mac Pro computers from a single
console (USB keyboard, USB mouse, and DVI [Digital Visual Interface] monitor,
plus audio). You can use it to share two peripherals—plus a keyboard and
mouse—among up to four computers. It supports Microsoft® IntelliMouse® and
other mice.
Setup is fast and simple, and no configuration software is needed. Its small
desktop footprint makes it ideal for on or under your desktop. Use the front-panel
buttons on the ServSwitch™ to select ports or start AutoScan. The front-panel
LEDs will light with the corresponding active port when switching between the
computers. The AutoScan function allows you to automatically scan and monitor
all computers, one by one, that are connected to the ServSwitch.
2.2 Features
• Supports DVI single link with resolutions up to 1920 x 1200 @ 60 Hz.
• Two or four computers share up to four different USB peripherals
(keyboard and mouse are included in this count).
• Select computers via front-panel buttons or hotkeys.
• Adjust the video signal strength using the front-panel FUNC button (4-port
only).
• Select the audio via hotkeys.
• Needs no drivers for keyboard and mouse operation.
• Supports keyboard and mouse plug-and-play.
• Buzzer sound confirms computer switching.
• Press front-panel buttons to activate AutoScan (4-port only).
• Selectable scan time interval.
• Supports one DVI monitor.
• Self-powered USB operation.
• No software required.
• Hotkey functions allow easy computer access.
• Supports Windows, Mac, and Linux® host systems.
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2- and 4-Port ServSwitch DT Series USB/DVI/Audio KVM Switches
2.3 Components
2.3.1 KV9612A Front Panel
Figure 2-1 shows the 2-Port ServSwitch DT Series front view. Table 2-1 describes
the components numbered in the illustration.
1
3
2
2
3
Figure 2-1. The 2-Port ServSwitch DT Series front-panel view.
Table 2-1. KV9612A front panel components.
No. Component
Description
1
2
Port selection button
Port LEDs
Press button to select a computer.
The right LEDs light to show the port that is
currently selected.
3
Power LED
Lights when the connected computer is pow-
ered on.
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Chapter 2: Overview
2.3.2 KV9612A Rear Panel
Figure 2-2 shows the 2-Port ServSwitch rear view. Table 2-2 describes the com-
ponents numbered in the illustration.
7
6
4
9
10
9
5
8
8
Figure 2-2. The 2-Port ServSwitch back-panel view.
Table 2-2. KV9612A rear-panel components.
No. Component
Description
4
5
Power connector
Connects to a 9–12-VDC, 1.5-A power supply.
Console USB Type A
ports
Keyboard and mouse ports for console.
Also two ports for peripherals.
6
7
8
Console DVI port
Attaches to the user monitor.
Computer DVI ports
Connect to a computer’s video cards.
Computer USB Type B
ports
Keyboard/mouse/peripheral ports for
computers.
9
Computer audio ports
Console audio ports
Speakers and microphones connect here.
Speaker and microphone connect here.
10
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2- and 4-Port ServSwitch DT Series USB/DVI/Audio KVM Switches
2.3.3 KV9614A Front Panel
Figure 2-3 shows the 4-Port ServSwitch DT Series front view. Table 2-3 describes
the components numbered in the illustration.
3
5
4
1
2
Figure 2-3. The 4-Port ServSwitch DT Series front-panel view.
Table 2-3. KV9614A front-panel components.
No. Component
1, 2 Port selection buttons
Description
Press buttons 1–4 individually to select a com-
puter.
1
Scan time buttons
Press buttons 1 and 2 together to change the
Scan time interval. The unit beeps 1, 2, 3, or 4
times for scan times of 3, 8, 15, or 30 seconds,
respectively.
2
Autoscan buttons
Port LEDs
Press buttons 3 and 4 together to start
Autoscan.
3
The top four LEDs (next to the port selection
buttons) light when the connected computer
is powered on. The bottom four LEDs light to
show the port that is currently selected.
Lights when power is on.
4
Power LED
5
Function button
Adjusts video signal strength or selects audio
signal. See Section 4.5.
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Chapter 2: Overview
2.3.4 KV9614A Rear Panel
Figure 2-4 shows the 4-Port ServSwitch rear view. Table 2-4 describes the com-
ponents numbered in the illustration.
8
9
10
10
11
12
10
10 11
11
7
11
6
Figure 2-4. The 4-Port ServSwitch back-panel view.
Table 2-4. KV9614A rear-panel components.
No. Component
Description
6
7
Power connector
Connects to a 9–12-VDC, 1.5-A power supply.
Console USB Type A
ports
Keyboard and mouse ports for console.
Also two ports for peripherals.
8
9
Console DVI port
Attaches to the user monitor.
Computer DVI ports
Connect to a computer’s video cards.
10
Computer USB Type B
ports
Keyboard/mouse/peripheral ports for
computers.
11
12
Computer audio ports
Console audio ports
Speakers and microphones connect here.
Speaker and microphone connect here.
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2- and 4-Port ServSwitch DT Series USB/DVI/Audio KVM Switches
2.4 What’s Included
The package should contain the following items. If anything is missing or dam-
aged, please contact Black Box.
• 2- or 4-Port ServSwitch DT Series USB/DVI/Audio KVM Switch
• Universal power supply, output: 9–12 VDC, 1.5 A
• Foot pad
• This user’s manual
2.5 What You’ll Need to Supply
• DVI monitor
• USB enabled computer
• Microphone and speaker
• USB keyboard
• USB mouse
• KV9612A: 2-Port ServSwitch DT Series USB/DVI KVM Switch Cable
(EHN900024U -0006, -0009, -0015): These cables connect to PCs that have
USB and DVI connectors. The cables are available in 6-, 9-, and 15-foot (1.8-,
2.7-, and 4.5-m) versions.
• KV9614A: 4-Port ServSwitch DT Series USB/DVI KVM Switch Cable
(EHN900024U -0006, -0009, -0015): These cables connect to PCs that have
USB and DVI connectors. The cables are available in 6-, 9-, and 15-foot
(1.8-, 2.7-, and 4.5-m) versions.
• Audio cable (EJ110-0002, -0005, -0010, -0015): These cables connect to
audio and are available in 2-, 5-, 10-, and 15-foot (0.6-, 1.5-, 3-, and
4.5-m) versions.
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Chapter 3: Installation
3. Installation
PC BIOS NOTE: The following BIOS setup changes are required for PC users but
not required for Mac users.
1. In STANDARD CMOS, set HALT ON ERROR to ALL BUT KEYBOARD.
2. In PNP and PCI SETUP, set PNP OS INSTALLED to YES and set USB IRQ to
ENABLED.
NOTE: The KV9612A and KV9614A are set to switch USB keyboard and mouse
signals from one computer to another. If you plan to share other periph-
erals such as a CCD camera, printer, or scanner, you must shut down the
computer’s driver before switching to another computer. Because port
switching is equivalent to unplugging the USB cable from one computer
and plugging it into another computer, some USB drivers check the
attached USB peripherals all the time and are not plug-n-play.
3.1 ServSwitch Placement
The 2- or 4-Port ServSwitch DT Series USB/DVI/Audio KVM Switch is small, por-
table, and designed to fit on a desktop. Consider the following when deciding
where to place the KVM switch:
• How long are the cables attached to your keyboard, mouse, and monitor?
• How far are the computers from the console?
• How long are the cables you use to connect your computers to the
ServSwitch?
CAUTION: Do not place cables near machines that create electrical noise such
as fluorescent lighting, air conditioning equipment, etc.
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2- and 4-Port ServSwitch DT Series USB/DVI/Audio KVM Switches
3.2 Hardware Installation
This section provides instructions for the basic hardware setup of a single
ServSwitch.
CAUTION: Before you begin, make sure that power is turned off to all the
devices that you will be connecting.
To prevent damage caused by ground potential differences, make
sure that all devices are properly grounded. If you don’t follow
these instructions, your computers and/or the ServSwitch could be
damaged.
3.2.1 Connecting the Console Keyboard, Mouse, and Monitor
1. Power off all computers.
2. Connect your USB keyboard and USB mouse directly to the USB keyboard
and mouse ports on the back of the ServSwitch as shown in Figures 3-1 and
3-2. Attach your DVI cable from your monitor directly to the DVI port. Then
connect the speakers and microphone to the console’s audio ports.
3. Connect your USB peripherals (if present) to USB ports 1 and 2.
Monitor
Mouse
Keyboard
Microphone
Speakers
Figure 3-1. KV9612A: console keyboard, mouse, monitor,
and audio connections.
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Chapter 3: Installation
Monitor
Mouse
Keyboard
Microphone
Speakers
Figure 3-2. KV9614A: console keyboard, mouse, monitor,
and audio connections.
NOTES: The monitor connected to the DVI-I port must be able to synchronize
with the computer’s video signal. If you are uncertain about the moni-
tor type, consult the monitor user’s manual.
3.2.2 Connecting the Computers
Using the all-in-one DVI cable (EHN900024U-0006 or -0010), connect a com-
puter to the ServSwitch. Connect the cable’s USB connector to the computer’s
USB port. Connect the cable’s DVI-I connector to your computer’s DVI-I monitor
port as shown in Figures 3-3 and 3-4. Connect the USB and DVI-I connectors on
the other end of the cable to the ServSwitch. Follow the same procedure to con-
nect the other computers.
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2- and 4-Port ServSwitch DT Series USB/DVI/Audio KVM Switches
ServSwitch
cable
USB
computer
Figure 3-3. KV9612A: computer connection.
ServSwitch
cable
USB
computer
Figure 3-4. KV9614A: computer connection.
3.2.3 Initial Power On
After connecting the ServSwitch, power on the computers. The ServSwitch will
get enough power to operate from the computers.
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Chapter 4: Operation
4. Operation
4.1 Powering Up the System
Once all cables have been connected and all computers have been powered on,
the ServSwitch emulates mouse and keyboard signals on each port, allowing your
computer to boot normally. The ServSwitch is now ready for use.
4.2 Selecting Computers Using Front-Panel Buttons
You can instantly select any computer by pressing the port selection button(s)
on the front panel. The corresponding LED lights when the port is selected.
4.3 Selecting Computers Using Hotkey Commands
A hotkey command is a short keyboard sequence used to select a computer,
activate a computer scan, etc. A hotkey sequence starts with two left Ctrl key-
strokes (in 0.2 seconds) followed by one or two more keystrokes. A built-in buzzer
generates a high-pitched beep for a correct hotkey command. The buzzer sounds
one low-pitched beep to indicate an error (in this case, the bad key sequence will
not be forwarded to the selected computer). Table 4-1 lists hotkey commands and
their functions.
To enable/disable the hotkey commands, hold Left-Ctrl + Left-Shift, then press
Num-Lock + Num-Lock, then release Left-Ctrl + Left-Shift.
NOTE: Do not use the keypad to the right of the keyboard.
Table 4-1. Hotkey commands.
Key Sequence
Function
Left-Ctrl + Left-Ctrl + 1 Selects the computer connected to Port 1
Left-Ctrl + Left-Ctrl + 2 Selects the computer connected to Port 2, etc.
Left-Ctrl + Left-Ctrl + F1 AutoScan powered on computers one by one
at a fixed interval
Left-Ctrl + Left-Ctrl
Aborts AutoScan
Left-Ctrl + Left-Ctrl + F2 Enables ManualScan, which enables you to
switch back and forth between powered-on
computers.
Press the <up-arrow> or <down-arrow> key to
select the previous or the next computer in
sequence. Press any other key to abort
ManualScan.
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2- and 4-Port ServSwitch DT Series USB/DVI/Audio KVM Switches
Table 4-1 (continued). Hotkey commands.
Key Sequence
Function
Left-Ctrl + Left-Ctrl + F3 To adjust Scan Rate, this command sets the
duration before switching to the next computer
in AutoScan.
The 4-Port ServSwitch DT Series generates 1 to
4 beeps, indicating a scan interval of 3, 8, 15,
and 30 seconds respectively.
Left-Ctrl + Left-Ctrl + F5 Audio Stick: You can link an optional multime-
dia module to the back of each KVM switch to
select microphone and stereo speaker signals.
There are two options for Audio Stick: ON and
OFF. When set to ON, audio selection follows
computer selection. When set to OFF, audio
selection stops following computer selection.
The ServSwitch beeps once for ON and twice
for OFF. Use this to listen to a particular com-
puter’s audio signal while operating other com-
puters.
Left-Ctrl + Left-Ctrl + A Press this key sequence to select audio for the
chosen computer. (Use when Audio Stick set to
Off.)
Left-Ctrl + Left-Ctrl + U Press this hotkey to select the USB port (for
both 2-port and 4-port ServSwitch).
USB port setting for 2-port ServSwitch:
Left-Ctrl + Left-Ctrl + F7 Press this hotkey to turn ON/OFF the USB1 and
USB2 ports on the console side.
USB port setting for 4-port ServSwitch:
Left-Ctrl + Left-Ctrl +F7 Press this hotkey to turn ON/OFF the USB1 port
on the console side.
Left-Ctrl + Left-Ctrl + F8 Press this hotkey to turn ON/OFF the USB2 port
on the console side.
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Chapter 4: Operation
NOTE: There are two options for USB Port Rule: ON and OFF. When set
to ON, USB-Port selection follows computer selection. When set
to OFF, USB-Port selection stops following USB port selection.
NOTE: Make sure the USB device linking procedure has finished before
switching to another computer.
4.4 Alternate Hotkey Commands
In addition to the Left-Ctrl + Left-Ctrl hotkeys, there are two other hotkey
sequences programmed into the ServSwitch:
Hotkey sequence #1: Left-Ctrl + Left-Ctrl + _
Hotkey sequence #2: Scroll-Lock + Scroll-Lock + _
Hotkey sequence #3: Hold Left-Shift + Num-Lock + Num-Lock + _
For keyboards that don’t have or won’t support Scroll Lock, press and HOLD the
Left-Shift key, and then press the Num-Lock key twice. For example, to select a
computer:
Hold Left-Shift + Num-Lock + Num-Lock then release Shift and press 1. This
selects the computer at Port 1.
Hold Left-Shift + Num-Lock + Num-Lock then release Shift and press 2. This
selects the computer at Port 2.
4.5 Function Button (4-Port Only)
Use the Function button on the front panel (#5 in Figure 2-3) to adjust the
video signal strength according to the length or quality of DVI cable. It also selects
the audio signal from any of the connected computers’ four ports.
To adjust the video signal strength, follow these steps:
1. Press the Function button three times.
2. Press push button #1 one or two times to adjust the selected port’s input
video strength. One beep = normal or two beeps = enhance.
or
Press push button #3 one or two times to adjust the selected port’s output
current. One beep = normal or two beeps = enhance.
or
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2- and 4-Port ServSwitch DT Series USB/DVI/Audio KVM Switches
Press push button #4 one, two, three, or four times to adjust the selected
port’s output emphasis. One beep = no pre-emphasis, two beeps = low pre-
emphasis, three beeps = medium pre-emphasis, or four beeps = high pre-
emphasis.
3. Once the setting is finished, press the Function button one time to exit the
setting.
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Appendix: Troubleshooting
Appendix. Troubleshooting
A.1 Problems/Causes/Solutions
Problem:
The keyboard or mouse does not work.
Cause #1:
In AutoScan, the keyboard and mouse do not function.
Solution #1: Press any front-panel button to select a computer, then use the
keyboard and mouse. See Section 4.2.
Cause #2:
Too many keyboard or mouse drivers are installed.
Solution #2: Remove all unnecessary keyboard and mouse drivers.
Problem:
Cause #1:
A newly installed USB device does not work.
Improper device driver.
Solution #1: Re-install the device driver.
Cause #2:
The device consumes too much power.
Solution #2: The device should be self-powered or add a power adapter to
the device.
Cause #3:
The device consumes too much power instantaneously.
Solution #3: If the device does not have a power jack, add a 9–12-VDC
power adapter with less than a 1-A current rating to the
ServSwitch.
Cause #4:
Improper device initialization.
Solution #4: Make sure that the USB cable is well-seated to ensure proper
communication.
Cause #5:
When the ServSwitch works under self-power (you have not
added a power supply), it supports a maximum of 100 mA as
specified by USB.
Solution #5: To remove all power sources to the ServSwitch, unplug all
USB A-B cables and the power adapter, then start all over again.
Select the computer by push button, then restart the computer,
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2- and 4-Port ServSwitch DT Series USB/DVI/Audio KVM Switches
and try again. See Sections 4.2–4.4.
Problem:
The computer hangs up while switching.
Initializing a device takes too much time.
Cause:
Solution #1: Wait at least five seconds before switching the computer for
proper USB communication.
Solution #2: Turn off the device driver (not keyboard or mouse) before
switching the computer.
Problem:
Cause:
AutoScan does not switch a PC automatically and the ServSwitch
beeps.
All PCs are off or only one PC is powered on. The scan mode
works for powered-on computers only.
Solution:
Power on the computers.
Problem:
Cause:
The resolution is not good.
Improper ServSwitch video settings.
Solution:
For the 4-port model only, press FUNC to adjust the optimal
video signal strength according to the length or quality of
DVI cable. See Section 4.5.
Problem:
Cause:
When users plug and unplug the DVI connector or switch from
port to port, there is no video signal.
Some DVI video cards don’t respond to the signal switch simula-
tions.
Solution:
Wait a few seconds, then use the Function button to adjust the
video signal strength. See Section 4.5.
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Appendix: Troubleshooting
A.2 Calling Black Box
If you determine that your 2- or 4-Port ServSwitch DT Series USB/DVI/Audio
KVM Switch is malfunctioning, do not attempt to alter or repair the unit. It con-
tains no user-serviceable parts. Contact Black Box at 724-746-5500; press 1, 2, 2.
Before you do, make a record of the history of the problem. We will be able to
provide more efficient and accurate assistance if you have a complete description,
including:
• the nature and duration of the problem.
• when the problem occurs.
• the components involved in the problem.
• any particular application that, when used, appears to create the problem or
make it worse.
A.3 Shipping and Packaging
If you need to transport or ship your 2- or 4-Port ServSwitch DT Series USB/DVI/
Audio KVM Switch:
• Package it carefully. We recommend that you use the original container.
• If you are shipping the 2- or 4-Port ServSwitch DT Series USB/DVI/
Audio KVM Switch for repair, make sure you include everything that came in
the original package. Before you ship, contact Black Box to get a Return
Authorization (RA) number.
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Black Box Tech Support: FREE! Live. 24/7.
Tech support the
way it should be.
Great tech support is just 30 seconds away at
724-746-5500 or blackbox.com.
About Black Box
Black Box Network Services is your source for an extensive range of networking
and infrastructure products. You’ll find everything from cabinets and racks and
power and surge protection products to media converters and Ethernet switches
all supported by free, live 24/7 Tech support available in 30 seconds or less.
© Copyright 2012. All rights reserved.
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