Allied Telesis AT-SBx31CFC960 - Manual (Page 203)

SwitchBlade x3112 Chassis Switch and AT-SBx31CFC960 Card Installation Guide
203
Figure 144. Connecting the Positive Wire
6. Wrap the negative lead wire clockwise around the remaining terminal
screw and secure the screw and wire to the negative terminal
connection on the terminal block with a #3 Phillips-head screwdriver,
as shown in Figure 145 on page 204. The negative terminal is on the
right.