The PSU I have is a 420W PC Power & Cooling 420W
The PSU in the vostro is a 350W Liteon.
The pin assignments look the same, but there is an extra wire running to the 11th pin slot in the PC&C PSU and it's running to the 24th pins lot of the Lite-On in the Dell. Does it matter to which pin slot this extra wire is running? Basically, I'm wondering if anybody knows if the PSU in the Vostro 420 is proprietary or not.
The Lite-On has decent specs for an OEM PSU, but has dual +12V rails where the PC&C has a single rail. I'm trying to add a GTS 250 to it.