Dell Dimension 740 745 280W Power Supply MH596 L2280P-01 PS-5281-5DF-LF /NH429 Manufacturer: Dell MH596 Model: L2280P-01 Part Number: PS-5281-5DF-LF Replacement P/N: U9087, 0U9087, X9072, 0X9072, NH429, 0NH429, MH596, 0MH596, RT490, 0RT490, H280P-01, HP-Q2828F3P LF Compatible System: Dimension C521, OptiPlex 330, 330 DT, 330 MT, 740, 740 DT, 740 MT, 740 MLK, 745