EV Board is not your own welding technology! EV Board is mainly used in 7406, 7486, ADG774, Connector. Depressed and many days of EV Board I originally used the Connector connected between the EV Board and the SFP without welding with EV Board. But I have learned a lot of things and monitors the waveforms on the EV Board. Thank you, a big brother! Just he gave a little bit. Have to admire! Solve a problem, but the Dongdong learned is much! RJ11 -> 7406 -> adg774 -> Connector just I tried my own board, the part of the power filter was taken away. The ADG774 has also been taken. You can read some EEPROM. At this time, I think the basic function is no problem!