Juniper JPSU-850W-HV-AFO 440 W Power Supply | QFX5120, HVDC, Enterprise

Keep critical switching infrastructure powered with the Juniper JPSU-850W-HV-AFO 440 W power supply module. Designed for the QFX5120-48T Switch, this module supports 120 V AC input and AFO airflow, helping maintain consistent operation in rack environments where thermal control and service continuity are essential. This PSU is a practical fit for teams standardizing on Juniper switching hardware and looking for a replacement or spare that matches the platform’s electrical and cooling requirements. At 2.20 lb, it is compact enough for straightforward handling during maintenance windows, while its module design supports fast swap workflows in production racks. For infrastructure teams, the value is in fit and predictability: the right power module for the right chassis, with no guesswork around compatibility. That reduces downtime risk, simplifies spares planning, and helps preserve the operating profile of the switch under real-world load. When uptime is tied to network access, the correct PSU is not a commodity part — it is part of the service model.