Genuine Dell 265W Watt 053N4 D3D1C 9D9T1 Optiplex 390, 790, 990 SMT Small Mini Tower Power Supply Unit PSU Compatible Part Numbers: YC7TR, 9D9T1, GVY79, 053N4, D3D1C, Dell Model Numbers : F265EM-00, AC265AM-00, L265EM-0, H265AM-00, L265AM-00 Genuine Dell 265W Power Supply For The Optiplex 390, 790, 990 Small Mini Tower Systems 265W Max Power Fits Dell Optiplex 390, 790, and 990 Mini Tower Systems Connectors: P1 - 24-pin ATX Motherboard Power, P2 - 4-pin P4 motherboard power, P3 - 4-pin SATA standard power connector, P5 - 4-pin SATA standard power connector, P8 - 4-pin SATA standard power connector, P9 - 4-pin SATA standard power connector Dell Part Numbers : YC7TR, 9D9T1, GVY79, 053N4, D3D1C | | Dell Model Numbers : F265EM-00, AC265AM-00, L265EM-0, H265AM-00, L265AM-00