Replace Power Supply Upgrade 400w watt replacement for Dell XW602 XW783 XW784 YX299 SFF TFX Compatibility: Dell XW602 XW783 XW784 YX299 Output Wattage 400 W Connectors 20+4 Pin Motherboard, 4-Pin CPU, 2x LP4, Floppy, 2x SATA Cooling 80mm Cooling Fan w/ Double Ball Bearing Weight 3 lb Input Voltage 100/240 V’ This TFX 400W 20+4 Pin PC Power Supply will easily replace your old, broken, or lagging power supply. With this 400W replacement power supply for Dell XW602 XW783 XW784 YX299, you can replace the PSU in a wide range of Dell desktops. 400W power! With 400W of steady computer power, this TFX Replacement 400W power supply can power both older PCs and custom builds with a wide range of peripherals. Easy cooling systems! With a passive 80mm cooling fan, this 400W TFX Replacement PSU will never overheat or burn out your system!