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

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Kensington laptop locks, security slots and more physicial security solutions for your computer  I bought a Kensington and a Nobel security lock and both are too big to fit my 15 7000 2-in-1 The Dell website doesn't even list any that

bos01 slot The Noble TZ Compact Wedge Lock is the new standard in mobile security This state of the The Kensington lock is also known as a K lock or K slot It is a tiny hole A Kensington lock can secure a portable device on laptops with a hole for one