... used once plug, simple and reliable, can be easily achieved switch, HUB, Router, ADSL, Network Card. Ethernet Industrial Control ... ports.Votgage:12v/220v optionalHigh integration of hardware circuit.Double power source hot standby,simple design of circuit,relibable performance ... 4ports network extender,10m,300m transmissio distance,built-in power source,200v,UTP cat5e. RJ45 Ethernet Extender up to ...