Genuine Dell 210W PSU Power Supply for OptiPlex GX280 Small Desktop (SD) Compatible Part Numbers: U5425, W5184 Model numbers: HP-U2106F3 Genuine Dell Replacement Power Supply For Dell OptiPlex Small Desktop: GX280 SD 210 W Max Output 100-127V or 200-240V Input Dimensions: 11 W x 1.5 H x 4 D - Inches