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

Kensington Original Keyed Laptop Lock NanoSaver with kensington security slot™ ClickSafe® Security Anchors : Included are anchors that fit either the industry-standard Kensington Security Slot™ or the security slot from Noble™ The anchor kensington nano security slot™ A Kensington lock is a security device that attaches a cable from a computer to a stationary object such as table

kensington security slot adapter kit One lock secures devices using the Kensington Nano Security Slot™, the other lock devices using the standard Kensington Security Slot™ (T-bar™ slot as used