Edirol UM-1EX - Manual (Page 41)

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Is the USB cable connected correctly?
Make sure that the UM-1EX’s USB cable and your computer are correctly connected.
It may take about 15seconds (or more) after the USB cable is connected.
Does your computer or USB hub have sufficient power supply capacity?
The UM-1EX cannot be connected if insufficient power is supplied to it. Check whether one of the
following cases apply.
• If you are using the UM-1EX with a notebook computer that is running on its battery, operation
may be unreliable with some models of computer. If this is the case, connect the AC adaptor to
your notebook computer.
• The power conservation mode of your computer may limit the power that is supplied to USB.
Check the settings of your computer.
• In some cases, the UM-1EX cannot be used with a bus-powered hub (a hub that does not contain a
power supply). Please use a self-powered hub (a hub that contains a power supply).
Is USB enabled on your computer?
Refer to the operation manual for your computer, and make sure that USB is enabled.
Does your computer meet the USB specifications?
If you are using a computer that does not fulfill the electrical requirements of the USB
specifications, operation may be unstable. In this case, you may be able to solve the problem by
connecting a USB hub.
If the above actions do not solve the problem, it is possible that the UM-1EX has been incorrectly
detected by the computer. Please reinstall the driver from the beginning of the procedure.
“Find new hardware wizard” does not execute automatically
“Find new hardware wizard” ends before the process is completed
“Found unknown device” appears even though you installed the driver
(Windows)
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