Lindy 4pcs USB Type A Port Blocker Key Green Description Physically blocks access to a USB port Quick and easy to use Consists of 4 locks and 1 key 4 other Colour code versions available: Green, Blue, Orange, White Each key only works with a lock of the same Colour https://www.lindy-international.com/USB-Port-Blocker-Pack-of-4-Colour- Code:-Green.htm?websale8=ld0101.ld021102&pi=40451&ci=60