NETGEAR APS550W 550W Modular Power Supply Unit NETGEAR ProSAFE Modular Power Supply Unit 550W AC (APS550W) is compatible with select Managed Switches such as M4300-28G-PoE+ (GSM4328PA) and M4300-52G-PoE+ (GSM4352PA). These M4300 series switches come with one PSU pre-installed. Another APS550W in second PSU bay can be combined for 1+1 power redundancy or 1+1 power expansion.
