Troubleshooting:
Ensure that all cables are well seated. Label all of cables with the number for each
respective computer to avoid confusion.
n
n
n
n
n
n
If the short beep sound repeats and switch button cannot work, it is suggested that using a
switching 5V DC power adaptor to KVM. This problem is probably caused by that KVM
switch is not able to get enough power from PC connected especially under PC is off or in
suspend mode.
If PC does not work properly when the KVM connects to PCs over PS/2 and USB both or
over PS/2 only, it is suggested that connecting PCs over USB only to work out the problem.
Mouse doesn't work in Auto Scan mode, you can press any key on the keyboard to return
normal operation mode and then use the mouse again.
If the KVM switch connects to PCs over USB and fails to boot PC by keyboard error (There
is a keyboard error message exists on the screen), it is suggested that the PC BIOS is
required to be reset or upgraded to new BIOS for accepting USB keyboard in booting.
For some old computers , if “keyboard not found error”message shows while resuming from
suspend mode under connecting KVM switch to PCs over USB interface only, please try to
connect KVM switch to PC over PS/2 to work out this problem. This error message is
caused by that the BIOS of these old computers will check PS/2 connection while resuming
from suspend mode.
In case of using USB mouse or keyboard with custom driver for the definition of some
special button or keys, these keys or buttons properly do not function if the KVM switch only
connects PCs over USB.
If users want to use these special function on the mouse or keyboard, and keyboard and
mouse support the PS/2 converter, please follow the following steps :
l
l
l
l
Connecting PCs over PS/2 instead of USB interface (Please shutdown the computers
first before switching USB connection to PS/2),
Use PS/2 converter to your keyboard and mouse and connect to KVM over the PS/2
port.
Please install driver for the keyboard and mouse.
Try the special keys and button to see if they work fine.
n
n
The recommended VGA cable maximum length is 5 meters without ghosting and
degradation. Normally, the cable length is based on driver capacity of your VGA card. If you
need longer VGA cable, please use VGA extender to accomplish your applications.
The recommended keyboard or mouse cable is 3 meters maximum without degradation. If
you use some long extension cable with you keyboard and mouse, it properly causes the
keyboard and mouse fail to work. Don′t use cables more than 5 meters.
15