The U-MPS-250W-AC is an AC to DC PSU module that is compatible with UniFi PoE Switches that are designed to use modular power supply units. The U-MPS-250W-AC can be used as an auxiliary PSU to deliver an additional 250W of PoE output, or as a backup to the primary PSU.Features: Modular AC to DC Power Supply Unit 54V, 250W Maximum Power Output Provides Additional PoE Power or Auxiliary Backup Compatible with US-L2-24-POE and US-L2-48-POE
Source: Ubiquiti