Toshiba L20/L25 User Manual page 73

Sample computer lock cable
To secure the computer:
1 Loop the cable through or around some part of a heavy
object.
Make sure there is no way for a potential thief to slip the
cable off the object.
2 Pass the locking end through the loop.
3 Insert the cable's locking end into the security lock slot
on the back of the computer, then give the key a quarter
turn and remove it.
The computer is now securely locked.
Getting Started
Caring for your computer
73