Every fan is wired up differently, if it's wired up that way, keep it!
Hm, for the 5th temperature sensor, I'd probably put it on my hard drive, just to check things are being kept fairly cold, since I can't really think of anywhere else.

Hm, for the 5th temperature sensor, I'd probably put it on my hard drive, just to check things are being kept fairly cold, since I can't really think of anywhere else.