What do you mean with "external"?? It must receive power for itself from 1 different molex (2 for better results) if that's what you mean.
It depends on the psu. I really don't rate Dell psu's my self; mostly because they can be a bugger to replace. Can you post the details from the sticker on the side of your psu?
If you take the side off you case and look at the psu, there should be something on it that tells you the rails and voltages.
Nope. No such thing. The fact is I'm using an OEM PC and the manual says I have a 350 watt power. Wonder if I can get it to send more pwer to the com.
Firstly there is nothing you can do to a pcu to get it to deliver more power. Secondly the 350w rating doesn't actually mean anything. It all depends which rails it is delivered on. A good branded psu will deliver will deliver good amounts on the key rails. Unbranded psus generally don't do this. Your best bet is to replace the psu with something more powerful - the problem is Dell use weird cutom connectors to the motherboard, which can really complicate things. You may be able to get hold of an adaptor, but it will also depend on whether a non-Dell psu will physically fit in your case.
Pffff man! I worked my PC (see details please on the right>>) 1 month ago with an OEM350W PSU and no problem occured! Now I have a Tagan480W and the OEM350W one work together and OCed my system ofcourse!
Since my antec blew up im using two generic 350watt PSU's. Neither of them will power the system sufficiently alone
The first PSU must be plugged onto the mobo and from the second one we have to attach only the black and green cables so on every reboot it will wake up! Mine CMStacker tower came with a splitter so I only attached the 2 PSUs on it and then itself on the mobo.
Unfortunatelly your case is too short to take up to 2 PSUs. As you can see mine has already 2 PSUs simply because it's huge!