The power supplies are located at the rear of the chassis. Each AC power supply weighs approximately 3.1 lb (1.4 kg). Each DC power supply weighs approximately 2.9 lb (1.3 kg). Only redundant power supplies (AC or DC) are hot-insertable and hot-removable.
Note: To maintain proper cooling and prevent thermal shutdown of the operating power supply unit, each power supply slot must contain either a power supply or a blank panel. If you remove a power supply, you must install a replacement power supply or a blank panel shortly after the removal.
The following topics provide instructions on how to replace power system components: