Hi clxs,
The S6730-H48X6C can use a single power module or double power modules for 1+1 power redundancy. Pluggable AC and DC power modules can be used together in the same switch.
The 8800, 6800, and 5800 series switches (except the 8850-64CQ-EI) support dual power modules in 1+1 backup mode.
When both power modules work properly, each power module provides half of the power to the switch.
When one power supply module fails, the other power supply module provides full power to the switch.
All power modules are hot swappable.