PWR-C1-350WAC-P<br>350 W AC Platinum certified power supply module<br><br>Power Supply Modules Overview<br>The switch operates with either one or two active power supply modules. A switch that is part of a StackPower stack operates with power that is supplied by other stack switches.<br><br>You can use two AC modules or one module and blank cover. All power supply modules have internal fans. All switches ship with a blank cover in the second power supply slot.