2-Port / 4-Port
KVM SWITCH
User’s Manual
Version 2.0 / 060731
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Model Specifications
KCF-121 KCB-121 KCF-121A KCB-121A
2-Port model √ √ √ √
Audio model
√ √
HDB-15
(VGA+USB+2 PS/2)
2 2 2 2
PC Ports
Audio (mic/speaker)
2 2
PS/2 Keyboard √ √ √ √
PS/2 mouse √ √ √ √
Video HDB-15 √ √ √ √
USB Keyboard √
√
USB mouse √
√
Console
Audio (mic/speaker)
√ √
KCB-121
KCB-121A
KCF-121
KCF-121A
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Model Specifications
KCF-141 KCB-141 KCF-141A KCB-141A
4-Port model √ √ √ √
Audio model
√ √
HDB-15
(VGA+USB+2 PS/2)
4 4 4 4
PC Ports
Audio (mic/speaker)
4 4
PS/2 Keyboard √ √ √ √
PS/2 mouse √ √ √ √
Video HDB-15 √ √ √ √
USB Keyboard √
√
USB mouse √
√
Console
Audio (mic/speaker)
√ √
KCB-141
KCB-141A
KCF-141
KCF-141A
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1. Introduction
The 2-Port/4-Port KVM Switch are high quality and durable systems that will allow
you to control 2/4 host computers (or servers) by connecting to PS/2 or USB
connectors from one console (PS/2 / USB Mouse, PS/2 / USB Keyboard, and
Monitor).
1.1 Features
Controls 2 / 4 computers from a single console (Keyboard/Mouse) over either
PS/2 or USB connections
The PC ports support Windows, Linux, Mac OS9/OSX, Sun Microsystems.
Keyboard emulation on each un-selected PC to allow it to boot normally
without a keyboard error
Hot-swap support. All devices connected to the KVM switch can be added or
removed at any time without shutting the unit down.
Support 2 types of switching: (1) Hardware Push Button control, (2) Hot key
command control from PS/2 or USB keyboard.
Provide Auto-scan function to alternate video between computers in a preset
interval.
Provide LED display for PC status monitoring.
Supports VGA resolutions up to 2048 x 1536.
Provide Beeper during switching enabled.
Self powered through PS/2 and/or USB connection
Fully compliant with the USB 1.1/ 2.0 specification
1.2 Package Contents
The product you purchased should contain the following equipment and
accessories:
One 2-Port /4-Port KVM Switch unit
2/4 combo 4-in-1 cables
2/4 sets of speaker+microphone cables. ( with Audio models )
Product CD (with operation manual)
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2. Specifications
2.1 General
Specification
Number Of Computers Controlled 2 / 4
PC Port Selection Method
Push Button and Hot-Key (PS/2 or USB Keyboard)
LEDs Red for PC Selection
Green for PC On-Line ready
Video 2 / 4 x HDB -15 female
( VGA+USB+PS/2 signal combined )
Speaker 2 / 4 audio female jacket (audio model)
PC Connectors
Microphone 2 / 4 audio female jacket (audio model)
Keyboard KCF models - PS/2 mini-DIN + USB A type
KCB models – PS/2 mini-DIN
Mouse KCF models - PS/2 mini-DIN + USB A type
KCB models – PS/2 mini-DIN
Video 1 x HDB -15 female
Speaker 1 x audio female jacket (audio model)
Console Ports
Microphone 1 x audio female jacket (audio model)
Auto-Scan Interval 5 ~ 250 Seconds
DDC, DDC2 monitor Yes (Max. Resolution: 2048x1536) @ 85Hz
Hot Swappable Yes
Operating systems supported Windows 98SE/ME/2000/XP/2003 Server, Linux
Mac OS9/OSX and Sun Micro System
Device driver No Need
Power By PS/2 and/or USB or External Power Adapter
Cable Length 6 feet (1.80 Meter)
Dimensions (L X W X H) 2-Port : 14.0 x 8.5 x 4.5 cm (5.5 x 3.3 x 1.7 inches)
4-Port : 21.5 x 8.8 x 4.5 cm (8.5 x 3.4 x 1.7 inches)
Unit Weight 2-Port : 420~465 g
4-Port : 620~650 g
Housing material Metal
Operating Temperature 32~ 122oF (0~ 50oC )
Humidity 0%~80%RH
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2.2 Front Panel and Rear Panel
The following figure illustrated 4-Port model with Audio and PS2 & USB console as
example:
Figure 2-1
Front Panel & Rear Panel
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3. System Requirements
Console
A VGA, SVGA, Multisync monitor capable of the highest resolution
PS/2 and/or USB Keyboard/Mouse
Computers or Servers (PCs)
The following equipment must be equipped with each computer or server.
- A VGA, SVGA or Multisync card
- Type A USB port or PS/2 6 pin mini-DIN for Keyboard and Mouse
Cables
The KVM Switch must be used with specific combo 4-in-1 cables. To purchase
more cable sets, contact your dealer.
Figure 3-1 Combo 4-in-1 cable
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4. Installation
LED Indicators:
Name Color Function
Selected Red The PC port is selected.
On-Line Green An active PC is connected.
Reset Switch :
Press this push button switch to reset the KVM device. To push the switch, use a
ball-point pen or a small stick.
4.1 Installation
Precaution:
1. When connecting Windows 98 systems, it is suggested that the PC must be
plugged to PS/2 ports, because Windows 98 does not support installation at
first time through USB HID installation driver.
2. Some old PCs can support USB ports during booting, but are requir ed to open
BIOS USB setting first.
3. The KVM switch does not support the USB keyboard which has built-in USB
HUB.
Console connections:
Plug USB or PS/2 keyboard, USB or PS/2 mouse arbitrarily and VGA video into
the Console ports located on the front panel. A combination of USB mouse and
PS/2 keyboard or a combination of PS/2 mouse and USB keyboard are all
supported by the KVM Switch unit.
System connections:
Use KVM combo 4-in-1 cable (as shown in Figure 3-1) to connect an available
KVM’s PC port to a computer’s video and USB or PS/2 ports.
Tune monitor display quality:
If you are using LCD monitor connected to the KVM switch with Audio and feel the
display quality is not comfortable to you, you can apply monitor’s Auto-adjusting
function to tune gain for better display quality just at the first time. After then, the
display quality will be remained better condition continuously.
9/9
This KVM Switch with specific combo cable provides three connecting methods.
1. Plug Speaker, Microphone, USB, PS/2 ( keyboard/mouse) ports and VGA into
PCs at same time, recommended in priority. ( Figure 4-1 ).
Figure 4-1
Speaker, Microphone,PS/2 & USB and VGA connected at same time
2. Plug only Speaker, Microphone, PS/2 (keyboard / mouse) ports and VGA into
PCs. ( Figure 4-2 )
Figure 4-2
Speaker, Microphone, PS/2 and VGA connected
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3. Plug only Speaker, Microphone, USB and VGA into PCs. ( Figure 4-3 ).
Figure 4-3
Speaker, Microphone, USB and VGA connected
5. Operations
The 2/4-Port KVM Switch has the ability to switch the keyboard, video, mouse,
audio, microphone simultaneously.
Note: When using the two-step Hot Key sequences, the keys must be pressed
within 5 seconds; otherwise the Hot Key action is terminated.
5.1 Push Button on front panel
Figure 5-1 Push Button for PC Port Selection
Push the button directly to select the connected PC.
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5.2 Hot-key operation ( Either PS/2 or USB Keyboard )
The hotkey command examples listed in following sections are based on the
4-Port models. The 2-Port models are equipped with the same design, but 2 PC
selections only.
Note: If your keyboard does not provide < Scroll Lock > button, use < Caps Lock
> or <Num Lock > as leading key instead.
5.2.1 Leading key Selection
Hot key commands:
[Ctrl] -> [Ctrl] -> [Caps Lock] -> [Enter] to change leading key to [Caps Lock]
[Ctrl] -> [Ctrl] -> [Num Lock] -> [Enter] to change leading key to [Num Lock]
[Ctrl] -> [Ctrl] -> [Scroll Lock] -> [Enter] to change leading key to [Scroll Lock]
Note: The default leading hotkey setting is [Scroll Lock]. After changing the
leading hotkey setting, the new setting will take effect immediately until the
KVM switch is powered off or reset.
5.2.2 PC Selection
Hot key commands:
[Scroll] -> [Scroll] -> [ 1 ] -> [Enter] to select PC1 (not including Audio)
[Scroll] -> [Scroll] -> [ 2 ] -> [Enter] to select PC2 (not including Audio)
[Scroll] -> [Scroll] -> [ 3 ] -> [Enter] to select PC3 (not including Audio)
[Scroll] -> [Scroll] -> [ 4 ] -> [Enter] to select PC4 (not including Audio)
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5.2.3 Auto-Scan Function
Hot key command:
[Scroll] -> [Scroll] -> [S] -> [Enter] to start Auto-scan operation
Under Auto-scan operation, you can press any key to stop Auto-scan operation.
Auto-scan function allows the KVM Switch alternates the connected PCs and
displays them on the console monitor.
Each PC is displayed in a time interval in a range of 5 ~ 250 seconds (The interval
is adjustable) before switching to the next PC. Pressing any key will stop the
Auto-scan and the console monitor screen will jump back to the original PC.
Adjustable scan time interval setting ( 5 ~ 250 sec. ) Hot key command:
[Scroll] -> [Scroll] -> [S] -> <5 ~250 > [Enter]
5.2.4 Beeper Enable
Hot key commands:
[Scroll] -> [Scroll] -> [B] -> [Enter] to disable Beeper
[Scroll] -> [Scroll] -> [B] -> [Enter] to enable Beeper
The Speaker/Beeper’s default setting is “Enable”. While the switching connections
are activated and Speaker/Beeper is in “Enable” status, the beeper has a short
beep.
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5.3 Audio ( Speaker / Microphone ) Selection – only work with Audio model
5.3.1 (PC+Audio) Combination Selection
Hot key commands:
[Scroll] -> [Scroll] -> [F1] -> [Enter] to select PC1 with its Audio
[Scroll] -> [Scroll] -> [F2] -> [Enter] to select PC2 with its Audio
[Scroll] -> [Scroll] -> [F3] -> [Enter] to select PC3 with its Audio
[Scroll] -> [Scroll] -> [F4] -> [Enter] to select PC4 with its Audio
5.3.2 Audio Only ( Speaker + Microphone ) Selection
Hot key command:
[Scroll] -> [Scroll] -> [A] -> [Enter] to enable/disable Audio auto-switch mode
Note: One long beep – Audio auto-switch mode is disabled.
Three short beeps – Audio auto-switch mode is enable
Audio A uto-Switch Mode
When this mode is enabled, the hardware push button can select and switch the
PC and the associated Audio at the same time. When disabled, only PC is
switched. This mode has default setting - enabled. Audio means speaker and
microphone signals.
Audio only selection hot key commands:
[Scroll] -> [Scroll] -> [A] -> [1] -> [Enter] to select PC1’s Audio only
[Scroll] -> [Scroll] -> [A] -> [2] -> [Enter] to select PC2’s Audio only
[Scroll] -> [Scroll] -> [A] -> [3] -> [Enter] to select PC3’s Audio only
[Scroll] -> [Scroll] -> [A] -> [4] -> [Enter] to select PC4’s Audio only
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5.4 Hot-Key Definition Table
Step 1 Step 2 Function
[Scroll] + [Scroll]
[1] + [ Enter ] Switch the active connection to PC 1
[Scroll] + [Scroll]
[2] + [ Enter ] Switch the active connection to PC 2
[Scroll] + [Scroll]
[3] + [ Enter ] Switch the active connection to PC 3
[Scroll] + [Scroll]
[4] + [ Enter ] Switch the active connection to PC 4
[Scroll] + [Scroll]
[A] + [ Enter ] Toggle disable/enable Audio auto-switch mode
[Scroll] + [Scroll]
[F1] + [ Enter ] Combined switching (PC+Audio) to PC 1
[Scroll] + [Scroll]
[F2]+ [ Enter ] Combined switching (PC+Audio) to PC 2
[Scroll] + [Scroll]
[F3] + [ Enter ] Combined switching (PC+Audio) to PC 3
[Scroll] + [Scroll]
[F4] + [ Enter ] Combined switching (PC+Audio) to PC 4
[Scroll] + [Scroll]
[A] + [1] + [ Enter ] Audio switching to PC1’s audio
[Scroll] + [Scroll]
[A] + [2] + [ Enter ] Audio switching to PC2’s audio
[Scroll] + [Scroll]
[A] + [3] + [ Enter ] Audio switching to PC3’s audio
[Scroll] + [Scroll]
[A] + [4] + [ Enter ] Audio switching to PC4’s audio
[Scroll] + [Scroll]
[B] + [ Enter ] Tog gle disable/enable beeper
[Scroll] + [Scroll]
[S] + [Enter] Toggle disable/enable Auto-Scan mode
[Scroll] + [Scroll]
[S] + [5 -250 ] +
[ Enter ]
Select the Auto-Scan interval from 5 to 250 Sec.
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6. Sun Microsystems Function Key Emulation
There are 16 special functions provided on Sun Microsystems keyboard. The KVM
Switch can emulate those function keys on console’s PS/2 and USB keyboard.
The following table lists the key mapping. To activate any emulation on the PS/2 or
USB keyboard, press the LEFT Window KEY first (this key usually is located
between the left [Ctrl] key and left [Alt] key), then press the second associated key.
Sun Micro System Function Key PS/2 (or USB) Keyboard
Stop L_Win & L_Alt
Props L_Win & L_Ctrl
Compose L_Win & L_Shift
Front L_Win & F1
Open L_Win & F2
Find L_Win & F3
Again L_Win & F4
Undo L_Win & F5
Copy L_Win & F6
Paste L_Win & F7
Cut L_Win & F8
Help L_Win & F11
Power L_Win & F12
Mute L_Win & 1
Volume Down L_Win & 2
Volume UP L_Win & 3
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Disclaimer
Information in this document is subject to change without notice. The manuf acturer does not make any represent ations or
warranties (implied or otherwise) regarding the ac curacy and completeness of this document and shall i n no event be liable for
any loss of profit or any other commercial damage, i ncluding but not limited to special, incidental , consequential, or other
damages.
No part of this document may be reproduced or transmitt ed i n any form by any means, electronic or mechanical, i ncluding
photocopying, recording or inform ation recording and retrieval systems without the express written permis sion of the
manufacturer.
All brand names and product names used in this document are trademarks, or registered trademarks of thei r respective
holders.
FCC Statement
This device generates and uses radio frequency and may cause interference to radio and television recepti on i f not installed
and used properly. This has been tested and f ound to comply with the limi t s of a Class B computing device in accordance with
the specifications in Part 15 of the FCC Rules. These specifications are designed to provide reasonable protection against such
interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation.
If this device does c ause harmful interference t o radi o or t elevision reception, which can be determined by plugging the device
in and out, the user can try to c orrect the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the device and receiver.
Connect the computer into an outlet on a circuit di ff erent from that to which the recei ver is connected.
Consult the dealer or an experienced radio/TV technician for help.
CE NOTICE
Marking by the symbol indicates compliance of this equipment to the EMC directive of the European Community.
Such marking is indicative that this equipment meets or exceeds the foll owing technical standards:
EMC Class B
EN 50081-1/1992 : E N55022, EN61000-3-2, EN61000-3-3
EN 50082-1/1998 : EN61000-4-2, EN61000-4-3, EN61000-4-4, EN61000-4-5, EN61000-4-6, E N61000-4-8, EN61000-4-11
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