Supermicro FAN-0074L4

4-pin Hot-Swap PWM (middle) Fan with HUSApplication: SC743, Dimension (mm) (L/W/H): 80/80/38, Rated Current (A): 0.58, Fan Speed (RPM): 5,000, Air Flow (CFM): 68.3, Static Pressure (in.H20): 0.53, Noise (dBA): 45.0