Allied Telesis AT-SBx81CFC960 - Manual (Page 191)

SwitchBlade x8106 Chassis Switch and AT-SBx81CFC960 Card Installation Guide
Section II: Installing the Chassis 191
Figure 134. Connecting the Positive (+) Power Wire with a Straight
Terminal
7. With a #3 Phillips-head screwdriver, connect the negative (-) power
lead wire to the negative terminal on the power supply, with the
remaining terminal screw removed in step 5. The negative terminal is
on the right. You may attach the terminals with the wires either above
or below the terminal block. Figure 135 on page 192 shows the wires
above the terminal block.
Allied Telesis recommends tightening the screw to 30 to 40 inch-lbs.