User's Manual

5
5.
Trouble shooting
If you encounter problems in using this product, please refer to the following list of
common problems encountered and possible causes. If you cannot solve the problem or
it does not appear in the list below, please contact the place of purchase for repair or
replacement.
Q : Computer cannot recognize this product, or Display has a “ ! ” mark to the left side
of the “ Common USB Hub” in displayed in the device Manager message box, or
Something other than “Common USB Hub” is displayed in the device Manager
message box.
A : One or all of the connections are not firmly in the place and properly connected
Q : Red Power LED is not lit on the unit.
A: The AC adapter is not properly connected to the unit or to the outlet, or the outlet
has no power or is turned off.
Q : Green LED light is not lit when port is connected to device.
A :The connection is not firmly in place.
Q : Downstream USB device does not function properly.
A : The downstream USB device is malfunctioning.
Q : When multiple downstream USB devices are connected a malfunction occurs.
A : A particular USB device does not support multiple devices. Please consult the
operating manual for that particular USB device.