Optiplex GX520 Case Cooling Foxconn Nidec Sunon Fan With Shroud Assembly, Compatible Dell Systems: GX620, 320, 330, 360, 740, 745, 755, 760, 780, Dimension 210L, C5214, 3100C Desktop (DT) Systems, Compatible Dell Part Numbers: M6792, U7581, X837C, PD812, Y5299, N777N, DP392, N135F, G928P, R231R, WK888, Y5299, Foxconn Fan Part Number : PV903212PSPF 0A, Nidec Fan Part Number : T92C12MS1A7-57A02, Sunon Fan Part Number : PSD1209PLV2-A 12V, 0.60A, 92mm x 92mm x 25mm 4 Pin Connector, Compatible with Dell Optiplex GX520, GX620, 320, 330, 360, 740, 745, 755, 760, 780 and Dimension 210L, C521 and 3100C Desktop Systems Foxconn Fan Part Number : PV903212PSPF 0A, Nidec Fan Part Number : T92C12MS1A7-57A02 Sunon Fan Part Number : PSD1209PLV2-A Dell Part Numbers : M6792, U7581, X837C, PD812, Y5299, N777N, DP392, N135F, G928P, R231R, WK888, Y5299