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

Kensington Simple Solutions Combination Laptop Lock for Standard kensington lock slot use It is a Kensington lock slot I had a call with my Apple reps last week and they confirmed it as such Like kensington lock slot use The Kensington Security Slot is a small locking mechanism used on devices, laptops

kensington security slot™ A Noble lock slot is 3,2 mm x 4,5 mm and fits a wedge lock mechanism The K-slot is more robust and used on many popular brands such as HP, while the Noble slot