Smart Keeper offers a full lineup of physical cybersecurity solutions for those who are trying to build an effective defense against open port cyber intrusion. The Smart Keeper Essential Series is a color coded pattern locking system to block unused data ports. Product Overview This is a physical cybersecurity device that prevents unauthorized connection to an unused USB port. Easy to Use: It can be installed by hand. Various Patterns: Multiple color patterns are available. All-Purpose Key Enhanced Security: Four security holes for secure fit. Required for removal: Smart Keeper Lock Key Basic Product Features Color Variation Keys and locks are color coded. There are 4 different color patterns. Keys work with locks that correspond with their color code. Lock Key Basic A single key can be used to unlock 10 kinds of Smart Keeper Essential products. There are multiple different color coded patterns available. Application Simply insert the port lock by hand into the open port. When ready to remove the lock, insert the key into the key slot at the bottom of the port lock. Then slide the button to engage the key header. Pull out the key to remove the port lock from the port.