Chapter 1: Overview
power so that the chassis can support more powered devices and adds power redundancy. For more information, refer to “Power over Ethernet on the AT-SBx81GP24 Line Card” on page 35.
Slots C and D are for the AT-SBxPWRSYS1 Power Supply, which powers all the hardware components of the chassis, except for the PoE feature on the ports of the AT-SBx81GP24 PoE Line Card. The chassis must have at least one AT-SBxPWRSYS1 Power Supply. One module can power a fully populated chassis. However, you may install two power supplies to add power redundancy to the chassis.
There are AC and DC versions of the AT-SBxPWRSYS1 Power Supply.
Refer to Figure 4 on page 21 for illustrations of the modules.
Note
The AT-SBxPWRSYS1 DC Power Supply is not compatible with the AT-SBxPWRSYS1 AC or AT-SBxPWRPOE1 Power Supply. You should not operate the chassis with both AC and DC power supplies. You may, however, operate the chassis for a short period of time with AC and DC power supplies if you are converting it from one type of power supply to another, such as from AC to DC. This allows you to transition the chassis without having to power it off.
