Replacement TFX Power Supply for Dell XW602 XW783 XW784 YX299 Upgrade 420w Compatibility: Dell XW602 XW783 XW784 Output Wattage: 420 W Connectors: 20+4 Pin Motherboard, 4-Pin CPU, 3x Molex, Floppy, 3x SATA Cooling: 80mm Cooling Fan Input Voltage: 100/240 V This TFX 420W 20+4 Pin PC Power Supply will easily replace your old, broken, or lagging power supply. With this 420W replacement power supply, you can replace the PSU in a wide range of PC desktops. 420W Power With 420W of steady computer power, this TFX 420W power supply can power both older PCs and new custom builds with a wide range of peripherals.