Install a 300 W or 750 W Internal AC Power Supply
To install a 300 W or 750 W AC power supply in a switch, follow these instructions.

Warning
To prevent an electrical hazard, make sure that the AC power cord is not connected to the power supply before you install the power supply in the power supply bay.

Caution
Make sure that the AC power supply circuit is not overloaded. Use proper over-current protection, such as a circuit-breaker, to prevent over-current conditions.
To install a second power supply, repeat step 1 through step 7.