Allied Telesis AT-SBx81CFC960 - Manual (Page 114)

Chapter 6: Installing the Power Supplies
114 Section II: Installing the Chassis
Figure 51. Removing the Blank Slot Cover from Power Supply Slot A
3. Remove the power supply from the shipping package and verify that
the shipping package contains the items listed in Figure 52 on page
115.
If any item is missing or damaged, contact your Allied Telesis sales
representative for assistance.