Industrial PoE switches that deliver power over UTP or STP cable not only save significant cost and space, but also increase power utilization and centralize power management. The JetNet 3705 equips with 4 PoE injector switch ports, with each port delivering power up to 15.4 watts in maximum,and one 10/100Base TX Up-link port transfering data to the remote end. The JetNet 3705 conforms to IEEE 802.3af Power over Ethernet (PoE) standard. The Power Over Ethernet technology can power up PoE enabled powered devices in full capability, e.g. IP surveillance camera, wireless Access Point, VoIP phone set, POS system, industrial sensors, controllers and security card reader. Using an external 48VDC power supply, JetNet 3705 enables power and data transmission to be pumped out over the same UTP or STP cable in the four PoE ports.