Avaya AP-4 User Manual page 85

Additional Hardware Features
The Kensington Security Slot is shown in the illustrations below (the
figure on the left shows the slot with the cable cover attached; the figure
on the right shows the slot with the cable cover removed). See
http://www.kensington.com for information on Kensington security
solutions.
Figure 2-14. Kensington Security Slot
Avaya Wireless AP-4/5/6 User's Guide 2-55