What goes in PATA?

PATA is no longer needed it's the old IDE plug and has been replaced with SATA, PERIF is the plug for a 4 pin Molex some of these might be needed to run case fans or accessories, other than that just use the cables you need.
On a side note I would return that power supply and buy the higher quality G2 model.
PATA https://en.wikipedia.org/wiki/Parallel_ATA
On that PSU it's for the Molex and should not be labeled PATA