Well if you're running an AMD system that conector is probably the P4-12V line which has no use on AMD boards.all cables fit but there is one cable from the psu that doesnt connect anywhere on my mobo...not sure what that one is for.
What mobo do you have?i disconnected all the cables ,except for the 2 cables going into the board
That's because the PSU isnt turning onif I disconnect just the 20 pin cable I dont get any sounds from the psu...