HP Compaq Pro 4300 Small Form Factor Reference Manual page 56

8. Insert the plug end of the security cable into the lock (1) and push the button in (2) to engage the
lock. Use the key provided to disengage the lock.
Figure B-10
9. When complete, all devices in your workstation will be secured.
Figure B-11
50 Appendix B External Security Devices
Engaging the Lock
Secured Workstation