Dell P2780 T4307 MC106 Optiplex GX280, Dimension 8400, Precision Workstation 370, PowerEdge SC420 CPU Processor Cooling Fan with Green Shroud Compatible Part Numbers: MC106, JC127, F3888, AFC0912DE, T4307, P2780 Genuine Dell CPU Cooling Fan With Shroud Assembly Connector: 5-Pin Compatible but not limited to the following systems: Dell OptiPlex GX280, Dell Dimension 8400, Dell Precision Workstation 370, Dell Power Edge 420SC Compatible Part Numbers: MC106, JC127, F3888, AFC0912DE, T4307, P2780