Delta Electronics PFB1212UHE-F00 120x120x38mm Cooling Fan, 252.85 CFM, 5500 RPM, 66.5 dBA, 12VDC, 4 Amp., 48W, 4-pin molex + 3-pin TAC connector 12VDC, 4 Amp. Max., 48W Ultra High Speed 5500 RPM, 252.85 CFM, 66.5 dBA Dimensions:120 x 120 x 38mm, Ball Bearing 4-pin molex power and 3-pin TAC connector Please make sure you understand the specifications before placing order. This is a extremely powerful fan and it provides tremendous amount of cooling fan at the expense of very high noise level. Please make sure your power supply can provide enough power for this cooling fan.