5
Quick Installation Guide
Troubleshooting
The USB204B can be easily monitored through its indicators.
You should be able to quickly resolve any problem by following
the troubleshooting steps listed below. If you cannot solve the
problem, contact your Accton distributor for further assistance.
General Problems
Many problems and error conditions can be cleared by first
following these steps:
1. Ensure all upstream cables are properly connected and that
all upstream hubs and the host PC are powered on.
2. Be sure the host PC and hub are not in suspend mode by
pressing any key on the keyboard or moving the mouse.
3. Disconnect devices from the hub and reset the hub. To
reset the hub, simply unplug the upstream connection and
then plug it back in.
Overcurrent LED is Red
This indicates an overcurrent condition exists.
1. Disconnect devices on downstream ports 1 through 4 one
at a time until the LED turns off. The last device
disconnected is causing the overcurrent condition.
2. If the LED is still red with all devices removed, reset the hub
by unplugging the upstream connection and plugging it back
in. If the LED remains red, the unit is defective and should
be replaced.
A Single Downstream Port Power LED is Off
The port has been disabled by the host PC. An overcurrent
condition may exist on the port, or the device driver identified a
problem with the device and turned the port off.
1. Disconnect the device. If the port LED does not turn on,
reset the hub. If the LED then turns on, you can reattach
the device.
2. If the LED does not turn on after the hub reset, you may
have to reboot the host PC.
Содержание USB204B
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