I have four hard disks and two cd/dvd's all on usb's on my desktop. This saves me the bother of crawling under the desk where the PC is.
Everything works with no great problems however I would like to mod the power supply. At present I have six voltage converters using six separate plugs. This lot also gets quite hot.
I have a spare PSU and was wondering if I could use this to power the four hard disks????
I estimate that each hard drive will use 0.5a of the 5v supply and 1.0a of the 12v. This will total 2.0amps of 5volt and 4.0amps of 12volt; my old 250w P.S.U.knocks out 25 at 5 and 10 at 12 which should cover the demand even during spin up.
Its the cables I'm wondering about, there are two types of plug. On two of the HD's there are four pins, pretty simple...1x5v,1x12v and 2x ground.
It's on the other HD power plugs, these have six pins??? They look very similar to a PS2 mouse plug.
Any help, thoughts, comments or advice would be appreciated.
Lionel

Hi welcome to PCHF so do all the usb devices have seperate power pack to run them?

Hi Madmatt
Thanks for your interest. Re your question

Er Yes...Thats why I mentioned in the second line

"At present I have six voltage converters using six separate plugs. This lot also gets quite hot. "

It's the pinout of the PS2 type power plug that I'm interested in.


Lionel