The Power-over-Ethernet (POE) module offers a convenient and cost effective way to deliver power to the Android I-Series. The module allows you to put a DC voltage onto specific pairs of the Ethernet cable so that devices connected to the network can use it as a power source. So instead of requiring a power drop which can be expensive, you can run a low voltage network to simplify installation of solutions for shelf signage and AV applications like conference room schedulers or AV control displays.