Toshiba STOR.E alu Guia Del Usuario página 19

If the Drive does not mount...
If the Drive does not mount after several seconds, the Drive is not
receiving sufficient electrical current to power up—even though
the Power/Data Indicator may be illuminated. In this case you will
need to use a second USB port for additional power. Follow the
instructions below:
1. Unplug the mini-USB connector from the Drive.
2. Plug the secondary USB type A connector into a second USB port
on your computer or hub.
Because this second port will supply power only, it does not matter if the
port is USB 1.1 or USB 2.0.
3. Plug the mini-USB connector back into the Drive.
After the Drive powers up, the Drive should mount.
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