New and unused. The PWE-4803RU is an 802.3af compliant Power over Ethernet (PoE) power source designed to support PoE powered devices such as the Crestron® CEN-WAP-ABG-1G Wireless Access Point. Standards-based Power over Ethernet affords a one-wire solution for connecting Ethernet devices, delivering power and data over a single CAT5/6 network cable. Using the PWE-4803RU, there is no need to install a separate power supply at the device location. The PWE-4803RU can simply be mounted at any convenient location up to 100 meters (328 feet) from the device.