Antec Super Cyclone Blower Dual Expansion Slot Cooler! NEW RETAIL PACKAGED 3 speed switch lets you balance quiet performance with maximum cooling! Fits in 2 expansion slots 4.5" deep, 1.75" thick. Exhausts hot air put of your system, protecting your valuable investment! 4 pin Molex Type Connector RPM (Speed): 2600, 2000, 1500 CFM (Air Flow): 37.5, 24.5, 20; DBA (Noise): 39.0, 32.1, 24.0