What is the difference between a Kensington vs Noble lock slot?

Why no Kensington locks on new Macbook Pros? kensington security lock slot Key Features Guard Your Laptop Against Theft; Attaches to Kensington Lock Slot; 6' Carbon-Strengthened Cable; Anchors to Fixed Surface Show More kensington nano security slot The Kensington lock slot is located on most computer equipment The slot is designed to provide strength by passing through both the inner metal panel and the

kensington nano security slot™ The Noble Wedge lock system improves on legacy locks by decreasing the footprint needed for the security slot built into the laptop or tablet device Thus this