Power Supplies

The DC 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.

All the EX4550 switches that are powered by DC power supplies, except the EX4550-32F-S switches are shipped with one DC power supply pre-installed in the rear panel of the switches. EX4550-32F-S switches are not shipped with pre-installed power supplies; you must order them separately.

The ACX5448 AC router operates at 650 W while the ACX5448-D and ACX5448-M AC routers need 850 W. The two power supply modules (PSMs) in ACX5400 routers are hot-removable and hot-insertable field-replaceable units (FRUs). The PSMs are installed in the router at the factory. You can replace the PSMs without powering off the router or disrupting the router function.