American Wall Socket
There are one-hole, two-hole and four-hole sockets for American network line and telephone line.
There are three types to choose from, the small blue parts marked with telephone or network can be assembled on the panel.
The one-hole socket can be plugged into a network line or a telephone line, the two-hole socket can be used at the same time, and the four-hole socket can be used with the network in more ways.