StarTech.com 40x10mm Replacement Dual Ball Bearing Computer Case Fan with LP4 FAN4X1LP4 (Black)
This 40mmx10mm PC computer cooling fan is a perfect addition or replacement PC fan for maintaining suitable operating temperatures within your computer case.  The PC fan can be powered through a simple LP4 connection to the PC power supply and offers a dual ball bearing design to ensure quiet, dependable operation.