Summit 550 W power supplies are available for switches with either front-to-back or back-to-front airflow.
You need the following tools and materials to replace a 450 W or 550 W AC power supply:
Thermal protective gloves
AC power cord, if you will not be re-using the cord from the removed power supply
An AC power cord is not included with the Summit AC power supply. You must obtain a power supply cord that meets the requirements listed in Power Cord Requirements for AC-Powered Switches and AC Power Supplies.
In a switch with a redundant power configuration, you can replace one Summit AC power supply without powering down the switch.
To replace a 450 W or 550 W AC power supply:
Caution
Power supplies can become very hot during operation. Wear thermal protective gloves when you remove a power supply from an operating switch.
Note
If you are not installing a replacement power supply, install a cover over the unoccupied power supply bay. Unoccupied bays must always be covered to maintain proper system ventilation and EMI levels.
Caution
Do not slam the power supply into the switch.
Warning
Always be sure that the source outlet is properly grounded before plugging the AC power cord into the AC power supply.