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

Kensington the CLICKSAFE Combination Laptop Lock for Nano nano security lock slot This laptop security lock by Navilock enables to lock different devices laptop, projector, monitor etc at any place The steel cable with its 2 m and key nano security slot ' Laptop Cable Lock - Nano Slot Compatible 4 Digit Combination Security Cable Lock - Serialized Anti-Theft Vinyl Coated Steel Cable Lock for Nano

nano security lock slot Put Me on the Waiting List · Keyed notebook lock designed to secure devices that use a Kensington nano security slot · Makes a great theft deterrent!