Allied Telesis AT-8088/xx (MT and SC) - Manual (Page 38)

Overview
38
DC Power Connector
The DC power connector featured on some models of the AT-8000 Series
Switch is described below.
The switch has a DC terminal block on the back panel, which has three
terminals (positive, frame ground, and negative). Refer to
Wiring a DC
Powered Unit on page 67, for instructions on how to wire a DC powered
unit.
Refer to Technical Specifications on page 78, for the input voltage range.