... demodulate the data signal,and transmit it to the computer, and allocate TV signal to the television, realize 2 layer Ethernet transmission ... work.Feature:1.Supply 10/100Base-T/Tx Ethernet interface, connect to computer, STB,IP Phone etc.2.Supply 2 RF connectors ... , connect to upstream and downstream cable3.Working under 30MHz Frequency,no effect to the exiting CATV signal4.Plug ...