Juniper JPSU-650W-DC-AFI

Juniper JPSU-650W-DC-AFI, 740-038949, CMUPABSBAA 650W DC Power Supply for EX4550, QFX3500 and QFX3600 (Port-side airflow exhaust)

The AC power supply in EX4550 switches is a hot-insertable and hot-removable field-replaceable unit (FRU): You can install it without powering off the switch or disrupting the switching function.