Is there a security slot on any Mac Book

This portable cable also works with standard Kensington lock slots Maclocks Security Laptop

Cable Lock For Nano Slot - en-uscomputer-partsltlocknano

security door with mail slot Kensington security slot in a server in the desktop position

security cable slot Cable Lock, which came with a Kensington T-Bar Lock, Kensington Nano Security Lock, and a Trapezoid Noble Wedge Lock After trying