What is the difference between a Kensington and Dell security cable?

No slot for a Kensington Lock : rLenovoLegion security lock slot Perhaps I could have prevented its movement and near-theft had the device had a physical lock on the side This locking capability, while security cable slot Perhaps I could have prevented its movement and near-theft had the device had a physical lock on the side This locking capability, while

security slot Kensington security slot in a server in the desktop position