Output power from a PS/2 port

[zybch]

I've just bought a cheap external hard drive enclosure that draws its power from the PS/2 keyboard socket on the motherboard.
My question is:
Seeing as how my mouse is connected via USB (leaving the PS/2 mouse socket unoccuiped) are there any forseeable problems
with using the unused mouse port to power the ext drive instead of the keyboard socket?
I have an adaptor (splitter type thing) that you can use to plug both a PS/2 mouse and keyboard to a notebook that just has a single PS/2 socket,
this means that the voltages etc will be the same right?

The reason I want to do it this way is simply one of convenience. Its a bugger to have to unplug the keyboard, plug in the power
thingy from the ext drive and then plug the keyboard into the thingy.

[BipolarBill]

Why don't you try it and tell us? Frankly, I believe that splitting the PS/2 port will cause voltage/impedance/resistance changes - as do all parallel connections.

[zybch]

Thats what thought, but the bit of research I've seems to indicate that the mouse and keyboard PS/2 style connectors
actually share the same pins on the mainboard, except for the data line for each of them. I haven't found anywhere that this is
stated in plain english however.
The splitter I've got works flawlessly on any number of notebook PCs I've tried it with and so far nothing has blown up or melted :)

I just want to be absolutley sure before I try it with my expensive motherboard