Using an old PC case and power supply as a HDD Enclosure?

I have 5 HDD and my computer is not handling the situation very well. hehe

There are some towers that I can buy to put 4 of my drives out, but I'm thinking that I could use the power source of a failed computer I have and use it to power the 4 (or at least 3) of the drives. The data cables (SATA) will remain connected to the working computer (so no USB solution).

The problem is that the power source will not work unless it is connected to the failing computer motherboard. Is there any way I could use the power source without plunging it to the old motherboard?

Any "HOW-TO" links may be useful as well.

Solution 1:

Its possible. Plugging in the power cable into the motherboard connects the required pins together that enables the SMPS to turn on. I dont know the exact pins but I gues you can google it out: use a insulated wire stripped at both ends to connect the pins together; the SMPS fan will start running if you do it correctly.

Solution 2:

I think I found what I was looking for:

http://aphnetworks.com/lounge/turn_on_psu_without_motherboard_the_paperclip_trick

But any other options/alternatives are welcome :)