Designed to supply power to IP telephones, wireless access points and other network devices over existing LAN cables, these Power-over-LAN hubs are installed between an Ethernet switch or hub and multiple Ethernet terminal devices. They help to create a unified source of data, voice and power by sending electricity over the unused portion of the commonly used standard Category 5 twisted pair cables. The 4006 hub is a six-port system developed specifically for the typical access point density of wireless LAN and Bluetooth in an Ethernet environment. It features plug-and-play compatibility with an auto-sensing capability that detects all enabled devices on the network. The 4012 and 4024 hubs address 12- and 24-port networks, respectively.