Allied Telesis AT-SBx81CFC960 - Manual (Page 174)

Chapter 9: Powering On the Chassis
174 Section II: Installing the Chassis
Figure 114. Connecting the AC Power Cord for the AT-SBxPWRSYS1 AC
Power Supply
3. Use the twist tie included with the power supply to secure the cord to
an anchor on the chassis to protect it from being accidentally pulled
out, as shown in Figure 115 on page 175.