The TP-SW5G-24 Power Over Ethernet (POE) 10/100/1000Mb switch offered by Tycon Power Systems is a fully automatic high speed 5 port Ethernet switch with up to 35 Watts of POE power per port. It complies with the IEEE802.3af/at specifications for valid POE device detection. The unit supplies power to the remote device on the unused Ethernet pins 4,5(V+) and 7,8(V-). The Ethernet spec supports distances up to 100m (328 feet) between the POE switch and the remote device. The switch accepts DC power from 10-36VDC which makes it an excellent choice for those systems powered by battery power. There are 2 power inputs for attachment of primary and backup power sources. It also accepts 802.3af or 802.3at power thru port 5.