DELL D495E-S0 495W Power Supply N24MJ CN-0N24MJ T320 T420 T620 R620 R720

Dell PowerEdge Server PSU

The Dell D495E-S0 is a 495W hot-plug power supply designed for PowerEdge R620 R720 R520 T320 T420 T620 servers. It accepts 100-240 V input and fits directly into the redundant bay of those platforms. IT teams use it to replace a failed unit or to add redundancy in supported chassis. It is not for builders who need a standard ATX form factor or a different wattage rating.

Hot-plug installation and common issues

The unit slides into the server bay and locks with a lever; no tools or cable routing are required because the server backplane provides all connections. Installation usually fails when the lever is not fully seated or when the bay latch is damaged from a previous removal. A mismatched part number will prevent the server from recognising the supply. Servers outside the listed PowerEdge line will not accept this module.

Sustained load behaviour

Rated at 495W maximum output the supply delivers continuous power within the server thermal limits defined by the platform. Redundant configurations share the load so each unit runs below peak capacity during normal operation. The fan speed adjusts to inlet temperature and total system draw rather than spiking on short bursts. Efficiency remains stable across the 100-240 V input range under constant demand.