What is the difference between a Kensington vs Noble lock slot?

TZ18T Low Profile Wedge Lock for Dell Consumer and Gaming wedge shaped lock slot Wedge Bushing Pulleys Motors All Motors; MotorsImage Motors All Motors Ball Lock Pins, Slot Pins · Roller Plungers · Plunger Accessories · Ball Buttons wedge shaped lock slot Kensington N17 Dell Cable Lock for Laptops with Wedge Lock Slot

wedgeshaped lock slot The N17 Keyed Laptop Lock utilizes a unique lock engagement, creating a strong and reliable connection between the lock head and slot The 5mm Keying System