In fact, the Internet cable is divided into four iron, four aluminum wire and all copper wire. So it is very important to distinguish whether the wire we bought is copper or iron aluminum. Here I will teach you how to distinguish the wire.

In order to build a LAN, it is an essential process to lead the net into the home, and the crystal head of the wire can be damaged when it is used. So, do you know how to connect the crystal head of the net? Below for you to introduce the connection diagram of the crystal head of the net line, it is...