Allied Telesis AT-8550SP - Manual (Page 64)

Installation
64
5. Apply AC power to the switch by plugging the power cord into the
AC power connector on the back panel of the unit (see Figure 22)
and plugging the other end into a wall outlet.
Warning
The power cord is used as a disconnection device. To de-energize
equipment, disconnect the power cord.

10
Figure 22 Connecting the AC Power Cord
When power is applied, the switch begins to load the AT-S62
software. The loading process takes approximately 20 to 30
seconds to complete.