User's Manual

44  Troubleshooting
Universal Serial Bus (USB) Specific Problems
Specific
Symptoms
What You
Experience
Possible Solutions
USB interface
is not working
USB
peripherals are
not working
• Make sure your monitor is turned on.
•Disconnect and reconnect the upstream cable
to your computer.
•Disconnect and reconnect the USB peripherals
(downstream connector).
•Turn o and turn on the monitor.
•Reboot the computer.
•Some USB devices require higher electric
current; connect the device directly to the
computer system.
High Speed
USB 2.0
interface is
slow.
High Speed
USB 2.0
peripherals
working slowly
or not working
at all
•Check that your computer is USB
2.0-compliant.
•Some computers have USB 2.0 ports. Ensure
that the correct USB port is used.
•Disconnect and reconnect the upstream cable
to your computer.
•Reconnect the USB peripherals (downstream
connector).
•Restart the computer.