Ensure reliable power supply to devices with this Juniper Networks 250 Watt AC Power Supply with front-to-back airflow. This AC power supply is a field-replaceable unit (FRU) that is cold-swappable, if the appliance has only one power supply module, and hot-swappable, if the appliance has an additional redundant, functioning power supply module that is plugged into a separate power circuit. Compatible with STRM500, STRM25000, STRM1500, NSM, and JUNOS Space devices.