The Dell P34M3 is a 450-watt power supply designed for Dell PowerEdge R430 and R440 rack servers. It is a cabled - non-redundant power supply with an 80+ Bronze certification - indicating good energy efficiency. The power supply accepts input voltages ranging from 100 to 240V AC and has a frequency range of 50-60Hz. It is not hot-pluggable - meaning it cannot be replaced while the server is powered on.