Allied Telesis AT-SBx31CFC960 - Manual (Page 137)

SwitchBlade x3112 Chassis Switch and AT-SBx31CFC960 Card Installation Guide
137
Figure 79. Tightening the Thumb Screws on an Ethernet Line Card
8. Tighten the two screws with a # 2 Phillips-head screwdriver to secure
the line card to the chassis.
Allied Telesis recommends tightening the screws to 5 inch-lbs.
9. Repeat this procedure to install the remaining Ethernet line cards.
10. After installing the line cards. go to “Installing the Blank Slot Covers” on
page 138.