Why not use a USB instead of an RJ45 connector?

USB limitations 1, almost impossible to make on-site (RJ45 with Do)2, distance is not available (RJ45 can be 100 meters or more)3, transfer equipment less, can not be extended (RJ45 fiber optic devices a lot, a few kilometers, a few hundred kilometers of small CASE)4, almost no test equipment (RJ45 detection means a lot)5, USB connection devices need additional drivers. RJ45 as long as the network card driver is good, the communication object is to follow the general communication protocol.

RJ45 is very good, absolutely tenacious vitality 1, it is one of the foundations of the Internet, at first only 10 megabytes, are now upgraded to Gigabit, speed Compatibility Good 2, the communication port at the same time almost eliminated, it is also very strong. Such as parallel port, serial port and so on. RJ45 is easy to make, except for RJ11, there is no more convenient than them. RJ45 has special testing tools (including simple and professional ones) and working indicator lights. Detection and maintenance is very good 5, integrated wiring inside RJ45 can plug RJ11, that can be used as a phone line, phone without separate wiring 6, can also expand the POE network power supply. A thing so tenacious of life can only mean that it has its own unique ability