TRENDnet TK-423K - USB/PS/2 KVM Switch User manual

TK-423K
Quick Installation Guide

Table of Contents
Table of Contents
Version 09.02.2008
English .....................................................................................................
Specifications ............................................................................................
Troubleshooting .........................................................................................
1
1
2
4
6
7
1. Before You Start
2. How to Install .....................................................................................
3. Operation ...........................................................................................
................................................................................

System Requirements
Application
?TK-423
?Quick Installation Guide
?AC Power Adapter (5V DC, 2A)
?4 sets of KVM Cables
?PS/2 or USB Keyboard
?PS/2 or USB Mouse
?VGA Compatible Monitor
?KVM cables
?Windows 98SE/ME/2000/2003 Server/Vista, Linux, and Netware.
Package Contents
1. Before You Start
English
1
LCD Monitor
4-Port USB PS/2 Audio
KVM Switch Kit
(TK-423K)
USB or PS/2
Keyboard
Microphone
Speakers
PC 4
PC 3
PC 2
PC 1
USB or PS/2
Mouse

2. How to Install
English
2
1. Turn OFF all computers and their
peripherals, and then disconnect all
power cords.
2. Connect the shared PS/2 or USB
keyboard, monitor, PS/2 or USB
mouse, speakers (optional) and
microphone (optional) to the KVM
switch's Console Port.
Connecting to USB Computer
To KVM
To Computer via USB
3. Use the KVM cables to connect
your PC to the KVM Switch. Then
proceed to step 6.
Note: Do not connect the PS/2
keyboard cable to your computer.

English
3
4. Connect the USB to PS/2 mouse
adapter to the USB connector.
7. Connect the included AC Power
Adapter to the KVM switch and
then to a power outlet.
Your installation is now complete.
Connecting to PS/2 Computer
6. Connect the included audio cables
to the KVM switch and to your PC.
To Mouse
Port To Keyboard
Port
To VGA port
5. Use the KVM cables to connect
your PC to the KVM Switch.
To Computer via PS/2

English
4
3. Operation
Note: To switch between computers, you can use the front-panel push buttons
or the Hot Key commands.
Hot-Key Commands
A keyboard hot-key command consists of three keystrokes:
Hot-Key command = ScrLk + ScrLk + Command key(s)
After pressing the ScrLk key, you have 2 seconds to press the ScrLk key again.
You then have another 2 seconds to press a command key. If you do not press
a key within 2 seconds, the switch will exit hot-key mode.
To select a specific PC port:
For a list of all the Hot-Key commands, please see the Quick Reference Sheet.
ScrLk ScrLk X
+ + x = 1~4 for PC channel number
Select PC =
LED Indicators
Green LED light: Indicates the
selected PC port is active, whether
the computer is turned on or off.
Push Buttons
Press the push buttons to switch
between computers.

Select Audio/MIC
Channel ScrLk ScrLk
+ + Fx Select the active Audio/Mic
channel
- - -
Command Hot-Keys Description
Front-Panel
Buttons
Quick Reference Sheet for TK-423
Select PC
Next lower channel
Autoscan
Next higher channel
Autoscan with
Programmable
Delay Time
Autoscan Beep
Sound On/Off
Console Mouse/
Keyboard Reset
Define Hotkey
Sequence
(default = ScrLK +
ScrLK)
Stop Autoscan
ScrLk ScrLk
+ +
(Arrow up)
ScrLk ScrLk
+ +
(Arrow down)
ScrLk ScrLk
+ + B
ScrLk ScrLk
+ + END
ScrLk ScrLk
+ + S
Press any key on keyboard
Select the active PC channel
Press the Push Button
for a specific port to
switch to that port
Select the next lower PC
connected channel
Autoscan through every
connected channel for quick
screen browsing of each
channel
Select the next higher PC
connected channel
Specify a delay within a range
of 10-100 seconds
Toggle On/Off beep sound
during Autoscan mode.
Reset Mouse/Keyboard on the
console side
Select the hotkey preceding
sequence among 5 options
Stop Autoscan activity
Press any button
or key
- - -
- - -
Unbind PC and
Audio/Mic Switching ScrLk ScrLk
+ + WDisable the binding of PC and
Audio/Mic switching.
- - -
- - -
ScrLk ScrLk X
+ +
Y = Scroll Lock, Caps Lock, Esc, F12 or
Num Lock
ScrLk ScrLk HY
+ + +
English
5
Note:
If you have defined a different hotkey preceding sequence key (e.g. Caps Lock, Esc, F12), press that button instead
of scroll lock. For example, if you want to turn off activate autoscan and have defined the hotkey preceding sequence key as
F12, press F12 + F12 + S.
Press the Push Button
for a specific port to
switch to that port
Press the Push Button
for a specific port to
switch to that port
Y
Press and hold down
button 4 for over 8
seconds, then release
the button and press
the key.
Y = Scroll Lock, Caps
Lock, Esc, F12 or
Num Lock
Press any push
button
Previous channel Toggle between the previous
channel and current channel.
- - -
ScrLk ScrLk
+ + Backspace
Bind PC and
Audio/Mic Switching ScrLk ScrLk
+ + Q
Enable the binding of PC port
and Audio/Mic port switching.
(Once this feature is enabled,
PC and Audio/Mic switching is
bound together. This feature is
enabled by default.
- - -
(X) = 0~9
1 = 10 seconds
2 = 20 seconds
3 = 30 seconds
4 = 40 seconds
5 = 50 seconds
ScrLk ScrLk SX
+ + +
6 = 60 seconds
7 = 70 seconds
8 = 80 seconds
9 = 90 seconds
0 = 100 seconds

6
Port Selection: Push Button and Hot-Key Commands
Keyboard State:
Power:
Saved and restored
LED Segment: Per Port : PC Active (Green)
Management: 4 computers
Console Port Connectors:
1 x USB keyboard Type A
1 x USB mouse Type A
1 x PS/2 keyboard 6-pin mini din female
1 x PS/2 mouse 6-pin mini din female
1 x VGA HDB 15-pin female
1 x 3.5mm audio in/out jack
1 x 3.5mm microphone in/out jack
PC Port Connectors:
4 x VGA HDB 15-pin female
4 x 3.5mm audio in/out jack
4 x 3.5mm microphone in/out jack
VGA Resolution: 2048 x 1536
Specifications
Weight: 935g (2.07lbs)
0%~90%, Non-Condensing
Humidity:
FCC and CECertifications:
Auto-Scan Intervals: 10 ~ 100 seconds
External AC Power Adapter : 5V DC, 2.5A
Dimensions: 255 x 117.5 x 45 mm
Operating: 0° ~ 40° C (32° ~ 104° F)
Temperature:

7
Troubleshooting
Q1:
A1:
Q2:
A2:
Q3:
A3:
Q4:
A4:
Q5:
A5:
Do I need to use the included external AC adapter?
You must use the included external AC adapter with the TK-423 KVM switch.
I have the KVM switch connected properly, but my keyboard and mouse don’t
work. What should I do?
First, make sure the power adapter is plugged into your KVM switch. Second,
make sure your PS/2/USB ports are working properly by connecting your mouse
and keyboard directly to the PS/2 or USB port computer. Third, once you confirm
that the PS/2 or USB ports are functional, please reboot your computers, and try to
use the KVM switch again. Fourth, if your computer is running Windows 98SE,
you may need to download and install the USB hot fix. Please go to this link for
download and installation instructions: http://support.microsoft.com/kb/q240075.
Once the hot fix is installed, follow the installation instructions in Section 2.
Can I connect or disconnect the KVM cables while the computers are turned
on?
Yes, you can connect or disconnect the KVM cables while the computers are
turned on, because the interface is Hot-Pluggable.
Yes, the KVM switch will restore the keyboard settings when switching
between computers. (i.e.: Caps Lock, Num Lock, etc.)
Will the KVM switch restore the keyboard settings between computers?
How do I switch from one computer to another with the KVM switch?
You can switch computers by pressing the Push Buttons on the KVM switch or
using the Hot Key commands. Go to Section 3 Operation for more information.
If you still encounter problems or have any questions regarding the TK-423K, please
contact Trendnet’s Technical Support Department.

Limited Warranty
TRENDnet warrants its products against defects in material and
workmanship, under normal use and service, for the following lengths of
time from the date of purchase.
TK-423 - 2-Year Warranty
If a product does not operate as warranted above during the applicable
warranty period, TRENDnet shall, at its option and expense, repair the
defective product or part, deliver to customer an equivalent product or
part to replace the defective item, or refund to customer the purchase
price paid for the defective product. All products that are replaced will
become the property of TRENDnet. Replacement products may be new
or reconditioned.
TRENDnet shall not be responsible for any software, firmware,
information, or memory data of customer contained in, stored on, or
integrated with any products returned to TRENDnet pursuant to any
warranty.
There are no user serviceable parts inside the product. Do not remove
or attempt to service the product by any unauthorized service center.
This warranty is voided if (i) the product has been modified or repaired
by any unauthorized service center, (ii) the product was subject to
accident, abuse, or improper use (iii) the product was subject to
conditions more severe than those specified in the manual.
Warranty service may be obtained by contacting TRENDnet office within
the applicable warranty period for a Return Material Authorization (RMA)
number, accompanied by a copy of the dated proof of the purchase.
Products returned to TRENDnet must be pre-authorized by TRENDnet
with RMA number marked on the outside of the package, and sent
prepaid, insured and packaged appropriately for safe shipment.
8

WARRANTIES EXCLUSIVE: IF THE TRENDnet PRODUCT DOES NOT
OPERATE AS WARRANTED ABOVE, THE CUSTOMER'S SOLE
REMEDY SHALL BE, AT TRENDnet'S OPTION, REPAIR OR
REPLACEMENT. THE FOREGOING WARRANTIES AND REMEDIES
ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES,
EXPRESSED OR IMPLIED, EITHER IN FACT OR BY OPERATION OF
LAW, STATUTORY OR OTHERWISE, INCLUDING WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
TRENDnet NEITHER ASSUMES NOR AUTHORIZES ANY OTHER
PERSON TO ASSUME FOR IT ANY OTHER LIABILITY IN
CONNECTION WITH THE SALE, INSTALLATION MAINTENANCE OR
USE OF TRENDnet'S PRODUCTS.
TRENDnet SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS
TESTING AND EXAMINATION DISCLOSE THAT THE ALLEGED
DEFECT IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY
CUSTOMER'S OR ANY THIRD PERSON'S MISUSE, NEGLECT,
IMPROPER INSTALLATION OR TESTING, UNAUTHORIZED
ATTEMPTS TO REPAIR OR MODIFY, OR ANY OTHER CAUSE
BEYOND THE RANGE OF THE INTENDED USE, OR BY ACCIDENT,
FIRE, LIGHTNING, OR OTHER HAZARD.
LIMITATION OF LIABILITY: TO THE FULL EXTENT ALLOWED BY LAW
TRENDnet ALSO EXCLUDES FOR ITSELF AND ITS SUPPLIERS ANY
LIABILITY, WHETHER BASED IN CONTRACT OR TORT (INCLUDING
NEGLIGENCE), FOR INCIDENTAL, CONSEQUENTIAL, INDIRECT,
SPECIAL, OR PUNITIVE DAMAGES OF ANY KIND, OR FOR LOSS OF
REVENUE OR PROFITS, LOSS OF BUSINESS, LOSS OF
INFORMATION OR DATE, OR OTHER FINANCIAL LOSS ARISING OUT
OF OR IN CONNECTION WITH THE SALE, INSTALLATION,
MAINTENANCE, USE, PERFORMANCE, FAILURE, OR INTERRUPTION
OF THE POSSIBILITY OF SUCH DAMAGES, AND LIMITS ITS LIABILITY
TO REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE PRICE
PAID, AT TRENDnet’S OPTION. THIS DISCLAIMER OF LIABILITY FOR
DAMAGES WILL NOT BE AFFECTED IF ANY REMEDY PROVIDED
HEREIN SHALL FAIL OF ITS ESSENTIAL PURPOSE.
Governing Law: This Limited Warranty shall be governed by the laws of
the state of California.
AC/DC Power Adapter, Cooling Fan,Power Supply, and Cables carry a
9

Certifications
This equipment has been tested and found to comply with FCC and CE Rules.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference.
(2) This device must accept any interference received. Including interference that may
cause undesired operation.
NOTE: THE MANUFACTURER IS NOT RESPONSIBLE FOR ANY RADIO OR TV
INTERFERENCE CAUSED BY UNAUTHORIZED MODIFICATIONS TO THIS
EQUIPMENT. SUCH MODIFICATIONS COULD VOID THE USER’S AUTHORITY TO
OPERATE THE EQUIPMENT.
Waste electrical and electronic products must not
be disposed of with household waste. Please
recycle where facilities exist. Check with you Local
Authority or Retailer for recycling advice.
ADVERTENCIA
En todos nuestros equipos se mencionan claramente las caracteristicas del adaptador de
alimentacón necesario para su funcionamiento. El uso de un adaptador distinto al
mencionado puede producir daños fisicos y/o daños al equipo conectado. El adaptador
de alimentación debe operar con voltaje y frecuencia de la energia electrica domiciliaria
existente en el pais o zona de instalación.

Copyright ©2008. All Rights Reserved. TRENDnet.
Product Warranty Registration
Please take a moment to register your product online.
Go to TRENDnet’s website at http://www.trendnet.com/register
20675 Manhattan Place
Torrance, CA 90501
USA