Figure 7: Power Supply Slots - Allied Telesis AT-SBx81CFC400 Installation Manual

Slot A
PoE Power PoE Power
Supply
Slots C and D are for system power supplies. The three system power
supplies are listed here:

AT-SBxPWRSYS1 AC Power Supply
 AT-SBxPWRSYS2 AC Power Supply
 AT-SBxPWRSYS1 DC Power Supply
System power supplies provide power for all the hardware components of
the chassis, except for the PoE feature on the ports of the AT-SBx81GP24
PoE Line Card. Please review the following items concerning the system
power supplies:
 The chassis must have at least one system power supply.
 A single power supply can power a fully populated chassis.
 Installing a second system power supply adds power redundancy
to the chassis.

System power supplies are installed in slots C and D of the
chassis.
 If you are installing only one system power supply, you may install
it in either slot.
 The AT-SBxPWRSYS1 and AT-SBxPWRSYS2 AC System Power
Supplies use the AC connectors on the back panel of the chassis
and are intended for AC environments.
 The AT-SBxPWRSYS1 DC System Power Supply has DC power
connectors on its front panel and is intended for DC environments.

The system power supplies are hot swappable. You do not have to
power off the unit to replace a power supply.
 The AT-SBxPWRSYS1 AC and AT-SBxPWRSYS2 AC System
Power Supplies are compatible and can be used in the same
SwitchBlade x8112 Chassis Switch and AT-SBx81CFC400 Card Installation Guide
Slot B Slot C
System Power
Supply Supply
Figure 7. Power Supply Slots
Slot D
System Power
Supply
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