Allied Telesis 8100S Series - Manual (Page 86)

Chapter 5: Powering On the Switch
86
Powering On an AC Switch
To power on an AC switch, connect the power cords to the connectors on
the back panels and to the appropriate power sources. All of the models
have two power supplies with separate connectors, except for the
AT-8100S/24C Switch and 8100L Series switches, which have just one
power supply.
Figure 34. Plugging in the AC Power Cord