On 26 Oct 2005 22:42:44 GMT, Thiemo Nordenholz
put finger to keyboard and
composed:

On a hard disk mount, there is a chip which, I guess, acts as a switch to
turn on and off the power supply to the hard disk drive depending on a
keyswitch's position.

In case it helps, I have put photos of the chip and the surroundings onto a
web page at
http://projects.thiemo.net/ChristophChip

Could it be a dual P channel MOSFET?
http://pdf.alldatasheet.com/datashee.../datasheet.pdf

-- Franc Zabkar

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