Review on Enhanced Kensington Cable Lock for HP Laptops, Lenovo, Asus, Acer & Other Devices - Compact & Reinforced Pivoting Lock Head (K65035AM) by Ronald Cambridge

This is Kensington. You can not say more. Of course you can find a cheaper cable that works the same way somewhere else, but this is a really good brand. They're so dominant that manufacturers who carve this little notch on the side of their devices refer to it as the Kensington notch. (Okay, it could be the license.) This cable is very long. I use mine on a desk that has a stand on the left and one on the right. I wrap the lock around a post and then loop through the loop a few times to make it smaller. This keeps it from expanding while still locked in place, allowing it to be removed from the bottom of the post that is welded to the T-shaped base. Despite the pattern, the lock at the end of the cable pivots and rotates around the lock's internal mechanism, so the cable doesn't stick out in a very awkward direction.