Allied Telesis AT-GS900/8E - Manual (Page 21)

AT-GA900/8 and AT-GA900/8E Gigabit Ethernet Switches Installation Guide
21
Power Supplies
The AT-GS900/8 switch has a single AC power supply socket on the back
panel which features autoswitch AC inputs. To power the switch on or off,
connect or disconnect the power cord provided with the switch.
The AT-GS900/8E switch uses an external AC/DC power adapter
provided with the switch, as shown in Figure 4.
Figure 4. External Power Adapter for the AT-GS900/8E Model
Note
For the power requirements, refer to “Power Specifications” on
page 47.