Specifications

Page 21
724-746-5500 | blackbox.com
Appendix A: Troubleshooting
Appendix A. Troubleshooting
Make sure that all cables associated with each computer are well-seated and
labeled to avoid confusion when connected to the unit.
The unit has built-in power protection that works automatically when needed.
When it works, USB communication halts and the only way to restart the unit
properly is to remove all power sources (USB cables and power adapter), wait a
few seconds, then apply power sources, and start again.
A.1 Problems/Causes/Solutions
Symptom: Keyboard or mouse does not work.
Causes:
• In Auto Scan, keyboard and mouse are not operable (press Left-CTRL twice to
abort).
• Too many keyboards or mouse drivers are installed.
Solutions:
• Press any front-panel button to select a computer, then use the keyboard and
mouse.
• Remove all unnecessary keyboards and mouse drivers.
Symptom: Newly-installed USB device does not work.
Causes:
• Improper device driver.
• Device consumes too much power.
• Device consumes too much power instantaneously.
• Improper device initialization.
• When the unit works under self-power (that is, no power supply is added), it
supports a maximum of 100 mA as per USB specifications.
Solutions:
• Re-install the device driver.
• The device should be self-powered. Add a power adapter to the device.