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Hi - check out ebay for an adaptec card.
External SCSI enclosures still require a card in your PC - you may as well put the drive inside. Beware that SCSI comes in 64 flavours depending how old /...

Hi - check on ebay for 1U rack server power supplies - they are only 1.75 inch tall. Mini ITX are the same but lower power. Although if you are running on 250 Watts that shouldn't be a problem.
much...

ATX power on expects a momentary NO - normally open. press the button "on" and it will become "closed" for a moment and tell the ATX PSU to start. On an illuminated doorbell push the NC contact puts...

Hi - the other two wiring connectors look like they have a black wire in the centre of each one. Put your DMM on the 2000 ohms range, make sure your wires are in the common and ohms reading socket,...

750watts will be fine on its own for your load list, but please google "power supply reviews" write down the top four names and buy one of them. Any PSU cheaper than 80 dollars or 40 pounds is pretty...

Hi - the PC PSU is a VERY precise 12 volts. A fully charged car battery is 13.8 volts - engine off, rising to 14.5 volts engine running - this is why the mini ITX "in car PC" guys need a clever box...

four fully charged NiCads or Ni MH at 1.2volts each is 4.8 volts - much more likely to work - but you need to buy 4 recharrgeables and a charger ...!
As long as you are certain the wires are...

Do you have any loads on these supplies. Green to ground is a momentary contact, but "power good" and "no load protection circuits" are continuous. The supplies may be firing up, then, finding no...