Targus Defcon CL cable lockI have a laptop/notebook computer combination lock for sale. This is a 4 digit combination lock attached to a 6.5 foot cable. The lock attaches to a security lock slot on a computer (or sometimes a monitor).
The lock and cable were made in Taiwan. You can reset the code to any 4 numerals (currently set to 0000). These sell for $30-$40 new. Lightly used.
This is a common security lock type, but they come in a few varieties. See the photo and if you are not sure, we can test with your computer. This is for the standard 7mm x 3mm K-slot (Kensington slot). It won't fit a noble wedge or nano slot.