Tom's Hardware > Forum > CPU & Components > Power Supplies, PC Cases & Case Mods > How to turn a power supply "hard" on without motherboard?

How to turn a power supply "hard" on without motherboard?

Forum CPU & Components : Power Supplies, PC Cases & Case Mods - How to turn a power supply "hard" on without motherboard?

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Does anyone know any good ways to make an ATX power supply turn on, via the case on/off switch, without a motherboard?

The reason I ask, is because I'd like to recycle a Case and PSU to be used as an external enclosure for 3 eSATA hard drives and 1 usb DVD drive... however, I'd like to not be limited to DVD/CD duplicator power supplies. I like my quiet Fortron ATX PSU. :)

Thanks.

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skittle wrote :

you said hard on


HAHAHHA



ahahahaha!
...you beat me to it.

Reply to APieceOfCheese

THanks, the hot wiring diagram may be helpful. I considered the duplicator case, but primarily I would like to use the ATX case PSU's, as they are highly superior (for the money) for quietness.

Also, I already own 2 extra ATX PSU's and 3 extra cases. It would be nice if I could simply mod an existing case/PSU to suit the needs of an external drive enclosure.

The daisy chain is actually a very good find. I could potentially daisy chain from one case to another, causing the drive enclosure to turn on and off whenever I turn off the computer (in theory.) - so that's worth looking into. However, I fear that this would cause both power supplies to try and power the motherboard. Also, I wonder if maybe running sata power to the next case, with an external connect/release point might be a good, cost-effective choice.

THose AT-style PSU's are noisy and have small fans. I try to only use slowish fans 120mm and up, as I am a freak for silent operation. I was hoping there was an easy way to hook the ATX PSU up to the case power button. Somebody should design a little motherboard that serves that purpose, but doesnt have any processors or even a northbridge.


Reply to neptunefix

to turn on a psu without a motherboard you need to short out the green wire to any black (earth) wire with some solder or a paper clip

Reply to Anonymous
- 0 +

If you dont have a load on it (cd-rom,floppy drive etc) it may not turn on at all.
If you havent already put a load on it then try that.

Reply to yodi
Tom's Hardware > Forum > CPU & Components > Power Supplies, PC Cases & Case Mods > How to turn a power supply "hard" on without motherboard?
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