What is the Kensington Security Slot on the laptop? What does it do?

The Kensington ClickSafe™ Keyed Laptop Lock is designed for effortless protection of

MicroSD card slot “Also, the mechanical locking structure with stopper and lock components prevents dislodgement of cards due to vibration

locker elektronisch slot Ultra high resistant security slot for mobile devices

locked mailbox with slot Solution to no Kensington Lock is the J-Plug Laptop Lock cable 1300mm Steel cable, inserts into the headphone jack offering high security