Allied Telesis X8106 - page 117

SwitchBlade x8106 Chassis Switch Installation Guide
117
Figure 73. Tightening the Thumb Screws on the AT-SBx81CFC400 Card
10. Tighten the screws with a #2 Phillips-head screwdriver to secure the
controller card to the chassis.
Allied Telesis recommends tightening the screws to 5 inch-lbs.
11. if you have a second AT-SBx81CFC400 Controller Fabric Card, repeat
this procedure to install it in the chassis.
12. Go to “Installing the Ethernet Line Cards” on page118.