Compaq Armada 7400 Reference Manual page 94

The security slot accommodates a cable lock so that the computer
can be physically secured to a work area.
1. Loop the cable around a heavy, fixed object to which you
want to secure the computer.
2. Insert the cable lock end of the cable through the loop end of
the cable.
3. Insert the lock into the security slot.
4. Lock with the key.
The cable lock can be purchased from Kensington
Microware Limited or Compaq authorized dealers, resellers, and
service providers worldwide. Ask for the Kensington MicroSaver
Security System, Model 64068.
Security