Toshiba Satellite A300 User Manual page 201

Problem
The battery depletes
quickly even when I
turned OFF the power of
the computer
External devices
connected to the
compatible ports do not
work when connected to
a compatible port
The USB WakeUp
function does not work
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Procedure
When USB Sleep and Charge function is set to
[Enabled] in the HW Setup, USB bus power
(DC5V) will be supplied to the external device
connected to the compatible port. If external
device is connected to the compatible port when
the AC adaptor is not connected to the computer,
the battery of the computer will be depleted even
when the power of the computer is turned OFF.
Connect the AC adaptor to the computer or
change the USB Sleep and Charge function
setting the [Disabled] in the HW Setup. Instead
use an USB Port the does not have the USB
Sleep and Charge function-compatible icon ( ).
Some external devices may not work when
connected to a compatible port when the USB
Sleep and Charge function is [Enabled] in the HW
Setup.
Reconnect the external device after turning ON
the computer.
If the external device still does not work, connect
device to an USB port that does not have the
USB Sleep and Charge function-compatible icon
( ) or change the USB Sleep and Charge
function setting to [Disabled] in the HW Setup.
When USB Sleep and Charge function is set to
[Enabled] in the HW Setup, the USB WakeUp
function does not work for ports that support the
USB Sleep and Charge function. In that case, use
an USB port that does not have the USB Sleep
and Charge function-compatible icon ( ) or
change the USB Sleep and Charge function
setting to [Disabled ] in the HW Setup.
Troubleshooting
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