Use this port blocker to prevent other devices from being connected to the system. Keep out devices such as Pen Drive, Mass Storage Devices, Cell Phone Adapters, and more. The port blocker includes a "key" which is used to lock in and remove the USB blockers.

• Includes: 4 locks and 1 key
• Physically blocks the USB ports to deny access to the USB ports
• USB Port Blocker: 4 Red