Allied Telesis AT-SBx81CFC960 - Manual (Page 139)

SwitchBlade x8106 Chassis Switch and AT-SBx81CFC960 Card Installation Guide
Section II: Installing the Chassis 139
Figure 80. 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 140.