FJM Security FJM-0916 USB Port Lock, Pack of 10 Easy to use; Just plug into the USB port and push the button to lock; No technical experience necessary Physically protects valuable data without the complication, installation, maintenance, and upgrade costs of software Consists of 10 locks and 2 keys System administrators can physically prevent users from connecting Pen Drives, MP3 Players and other USB Mass Storage Devices to their computers to copy data, introduce viruses etc. Stop thieves before the start with a visible indication that the port is blocked