Genuine DELL CPU/Case Fan designed to work in various Optiplex and Dimension systems: Dimension 4300 4400 4500 4550 8200 8250 8300 B110 1100 2400 3000 and 4600Optiplex Towers GX60 GX240 GX260 GX270 160L 170LPWS 360 350 340 and PowerEdge 400SC This fan uses a 3-Pin Power Connector, and all fans are new from the factory and guaranteed to work in your system.We guarantee this fan to work in the above systems and replace all of the following Dell fan part numbers: 4W022, 9M060, W0101, J0531, D1598, F1588 We guarantee this fan to fit into the following Dell cooling assemblies: 2X585, P0676, 7Y292, 0P020, 2X002, K0456, H0633, D1601, D1592 Some fan assemblies use Dell rubber rivets to fasten the fan to the shroud. Save your existing rivets to fasten this new fan.