Dell PowerEdge R420 Power Supplies
The PowerEdge R420 server supports up to two (2) AC power supplies with 1 + 1 redundancy, auto sensing, and auto-switching capabilities. Power supply wattages are 550W or 350W (for one processor only).
There is also a single cabled 550W power supply option. When installing a second power supply in an existing server, the wattage must match the first.
All power supplies have been tested and pulled from working machines with our 90-day parts replacement warranty.