Not charging a device Device is capable of transfering data HUB not intended for this purpose
Red (PWR) LED indicator does not
illuminate
HUB is not being powered
USB A-plug is not connected to a
computer
Device is unable to transfer data
Green LED indicator does not
illuminate
*The hub functions in “Bus-Powered-Mode”. This
means that the current of 500mA supplied by the
computer via USB is divided among the four ports.
The total current consumption of all devices
connected at any one time must not be higher than
this value. Alternatively, you can power the USB hub
with the power supply. If the power supply is used,
then each port could be loaded with 500mA.
*Power Supply Unit not plugged into
wall outlet (Optional)
Check Red (PWR) LED indicator to
make sure it is illuminated
Plug the USB A-plug of the cable into a
free USB connection of your computer
Confirm device can transfer data to
computer
Suggestion
USB Extension not plugged into HUB or
computer USB (Required)
Plug the USB A-plug of the cable into a
free USB connection of your computer
and plug the USB mini-plug into the
port of the HUB
Plug the Power Supply Unit into a wall
outlet with suitable operating voltage.
Connect the power supply's low-
voltage plug to the HUB's
corresponging input socket
4-Port USB Hub Troubleshooting Guide
Condition Possible Cause
004-10231-00 Rev. AA1 (12/16/19)
-
1
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