Kensington Slots vs Nano security slots

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 Versatile Use Ideal for portable use or at the office, the computer cable lock features a strong vinyl-coated steel cable

kensington lock slot Kensington Standard Slot: This is the original and most common kind of slot looks like a small rectangle You can use any standard security

kensington security slot adapter kit The Kensington Lock is a slot, not a loop, though Kensington sell a thing that goes in the Kensington Slot and