This is a genuine Cooling Heat-sink Fan system assembly for Dell Optiplex 7090 5070 Small Form Factor Tower Desktop series, Brand NEW and Unused from OEM factory, if your PC fan is running very loud or not functioning then a replacement may be needed. Compatible Part Number(s): 3CWF9-A01, BAZA1233R2U, PVB120J12H-P01 D P/N: KGWT4, 0KGWT4 Specifications: Direct Current: DC 12V / 0.9A, 28.2 CFM Min Color: Black Power Connection: 4-pin 4-wire Compatibility with models: Optiplex 7090 SFF Desktop Optiplex 7080 SFF Desktop Optiplex 7070 SFF Desktop Optiplex 7060 SFF Desktop Optiplex 7050 SFF Desktop Optiplex 5080 SFF Desktop Optiplex 5070 SFF Desktop Optiplex 5060 SFF Desktop Optiplex 3060 SFF Desktop Optiplex 3050 SFF Desktop Optiplex 3040 SFF Desktop Precision 3430 T3430 Precision 3431 T3431 Each pack includes: 1x 65W CPU Cooling Heat-sink Fan assembly