Allied Telesis AT-SBx81CFC960 - Manual (Page 140)

Chapter 7: Installing the AT-SBx81CFC960 Control Card and Ethernet Line Cards
140 Section II: Installing the Chassis
Allied Telesis recommends tightening the screws to 5 inch-lbs.
4. Repeat this procedure to cover the remaining empty slots with blank
slot covers.
5. Store any unused blank panels in a secure location for future use.
6. Go to Chapter 8, “Installing the Transceivers and Cabling the Ports” on
page 141.