DPC 2100 R2 Orignal Firmware needed.

[Baxter]

I have scoured the net and appear to be finding conflicting information about the pin out, which mine is a little more complicated because I am going from a usb to serial adapter and then from 9 pin serial to 4 pin . I cannot find any information about where to connect the 5v PIN to serial (VCC) . I tried with just the first two pins and ground just to see if I didnt need the VCC, but I a just getting assembly code.