Genuine Dell K8964 275 Watt Power Supply For Dimension 5100C, 5150C, XPS 200, Optiplex GX620 Small Form Factor (SFF), Identical Dell Part Numbers: K8964, TD570, YD080, N8373, WD861 Genuine Dell Replacement Power Supply For Dell Dimension 5100C and 5150C/XPS 200 For Dell Optiplex GX620 SFF, Other Model numbers: N275P-00, H275P-00, HP-L2757F3P LF, NPS-275BB A 275 W Max Output, Identical Part Numbers: K8964, TD570, YD080, N8373, WD861 100-120V or 200-240V Input, Dimensions: 8 1/4 W x 2.5 H x 3 D - Inches