Dell 6985R CPU Case Cooling Fan for Dimension 8100, Optiplex GX400, and PWS 330 530 560. Model NMB 3610KL-04W-B66 fits Datech 0925-12HBTA, and replaces Dell P/N#: 6985R, 929FF, 21KTM. Genuine Dell Replacement 92x92x25mm. 3-Pin Connection Grill is included! Main Bracket 1985R is Included! Factory New Items