DELL U4714 DELL 250W POWER SUPPLY OPTIPLEX Dual SATA-GX280/GX270 Genuine Dell Replacement Power Supply Connectors P1 - 24-pin ATX Motherboard Power P2 - 4-pin P4 motherboard power P3 - 4-pin SATA standard power connector P4 - 6-pin Dell proprietery connector P5 - 4-pin SATA standard power connector P6 - 4-pin Molex Power Connector P7 - 4-pin floppy connector P8 - 4-pin Molex Power Connector P9 - 4-pin Molex Power Connector Fits Optiplex GX280 Tower Fits Dimension 4700 and 8400 250-watt Max Output; 100-120V or 200-240V Input