What is the Kensington security slot used for?

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A Kensington Security Slot is a small slotopening that you can find on most modern laptops and many other devices If you have this slot on

Kensington Security Slot Adapter Disk - Silver Eligible for next-day delivery or collection Eligible for Cash on Delivery  lock slot is on the G14 2021 edition Any recommendations or help would be appreciated The Kensington lock I bought doesn't seem to work at all

12_06_23 lottery result Kensington N17 Dell Cable Lock for Laptops with Wedge Lock Slot - Combination Lock - Carbon Steel · 4 out of 5 stars ₹3,674₹3,674  Key Features Guard Your Laptop Against Theft; Attaches to Kensington Lock Slot; 6' Carbon-Strengthened Cable; Anchors to Fixed Surface Show More