What's this hole with a lock symbol on the back of my monitor?

kensington lock slot use
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When it comes to device locking options, you can use the Kensington Slot with keyed locks or combination locks The former comes with a set of

KENSINGTON Slim N17 Combination Laptop Lock for Wedge-Shaped Slots Tough lock head is internally verified and tested for industry-leading standards in

kensington security slot™ It can lock your electronic equipment to a rod, table leg, window frame, etc by pushing the lock over an attachment placed on the Kensington

kensington nano security slot™ Designed to fit the Kensington Nano Security Slot, the NanoSaver™ Combination Laptop Lock