The PSU is literally the same one
Soda posted, although I'd prefer to not spend $160 on it and wouldn't mind bumping up the power since the computer does have a graphics card and an extra HD in it.
Not sure if this is a good enough photo:
Basically, the 20-pin connector labeled "P1" in the center is the one plugged in to the motherboard, then there's two daisy chains of the one just to the left of the motherboard, which I think is the molex connector you mentioned. One of the daisy chains has two of those 4-pin connectors, the other has three, and they both end in that smaller bright white 4-pin connector (which goes in to the floppy drive on one of the chains.)
The square four pin connector just to the left of the ribbon cable and the 6(?) pin connector on the far left edge aren't connected to anything.
EDIT: Ok, I just found
this page with pictures and names of the connectors. If that page is correct, I've got a 20+4 pin as the main power connector for the motherboard (with the +4 not being used,) two molex connector daisy chains, both which end with a floppy connector. Still not sure what that one on the far left is. This looks like it might do the trick (
https://www.newegg.com/Product/Product.aspx?Item=N82E16817707005) but it doesn't mention the molex even though they are in the photos.