Bundle: Four locks plus one key. Easy to Use: It can be installed by hand. The Smart Keeper HDMI Port Lock effectively locks any unused HDMI ports on your device. The Smart Keeper HDMI Port Lock is ideal for lobbies, conference rooms, and any other place in your business where audio/visual devices are acting as peripherals to your network. All-Purpose Key: A common key can be used to unlock ten different products within the Essential Series. Smart Keeper HDMI Port Lock with Key, enables you to secure your open HDMI ports and provide access only through authorized personnel.