FREE Upgrade to a better PSU, with a Maximum Output of 420 WattsReplacement Power Supply Upgrade for Dell Inspiron 546S 545S Use this replacement to replace your dead PSU. Orders ship same or next bussiness day via Free expedited shipping with tracking. This power supply has 420 watts of power and can be a replacement for the 250 watt / 300 watt / 320 watt versions. Compatibility Dell Inspiron 546S 545S Output Wattage 420 w Connectors 20+4 Pin Motherboard, 4-Pin CPU, 2x Molex, Floppy, 2x SATA Cooling 80mm Cooling Fan w/ Double Ball Bearing Input Voltage 100/240 V