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Appendix: Troubleshooting
• If the device does not have a power jack, add a power adapter with 9–12 VDC
and less that 1-A current rating to the unit.
• Make sure the USB cable is well-seated for good communications.
• Remove all power sources to the unit by unplugging all USB A–B cables and the
power adapter; then start all over again.
• Select the computer by push button, restart the computer, and try again.
Symptom:
Computer hangs up while switching computer.
Causes:
Device initialization or enumeration takes too much time.
Solutions:
• Wait at least five seconds before computer switching to ensure proper USB
communication.
• Turn off the device driver (not the keyboard or the mouse) before computer
switching.
Symptom:
Auto Scan does not switch PC automatically, and the unit beeps.
Causes:
All PCs are off or only one PC is turned on. Scan mode works for
powered-on computers only.
Solution:
Turn on computers.
Symptom:
No video signal when users plug and unplug the DisplayPort
connector or switch from port to port.
Cause:
Some DisplayPort video cards do not respond to the signal switch
simultaneously.
Solutions:
• Make sure that you have plugged a monitor to the console’s DisplayPort port
before plugging/unplugging the PC’s video connector(s).
• Wait for a few seconds.
