Allied Telesis AT-SBx31CFC960 - Manual (Page 265)

SwitchBlade x3112 Chassis Switch and AT-SBx31CFC960 Card Installation Guide
265
Figure 165. Reinstalling the Screws on the Positive and Negative
Terminals
8. Slide the plastic cover to the left and lightly tighten the two screws to
secure it in place. Refer to Figure 166 on page 266.
Caution
Do not over tighten the screws or you may crack or break the plastic
cover.
The plastic cover may not be present if the lead wires were connected
to the terminal block with the right angle terminals. If this is the case,
you may either skip this step or reinstall the plastic cover on the power
supply.