Maintain PoE headroom on the FortiSwitch FS-548D-FPOE with the Fortinet FS-PSU-920 AC power supply. Built as a proprietary replacement for this specific switch platform, it supports the power budget needed to keep connected devices online and PoE services available. That matters when the switch is carrying access points, phones, cameras, or other powered endpoints that cannot afford a drop in capacity. This unit is designed for straightforward replacement in environments that standardize on Fortinet switching. By matching the intended hardware profile, it helps reduce compatibility risk compared with generic alternatives and keeps spare-part planning simple for operations teams. It is a practical choice for maintaining service continuity, especially where PoE demand is high and switch uptime is tied to edge device availability. Power cord is not included, so deployment should account for site-specific cabling requirements. For teams managing critical access-layer infrastructure, the FS-PSU-920 provides a targeted replacement path that supports the switch architecture rather than forcing a compromise.