The RJ connector is the most popular network interface standard in the world. RJ is the abbreviation of English "Registered Jack" (registered jack), usually in the form of a rectangular plastic socket, there is a hook-shaped latch on the socket, as long as the socket is inserted into the corresponding socket, the connector can be fixed.
The RJ45 connector has a total of eight pins. When you need to identify the pin number, you can hold the plug in your hand and move the end with the 8 small gold-plated pieces upward, and the end with the large rectangular opening into which the network cable is inserted downwards. At the same time, look directly at the side without the slender plastic bayonet, from the left The first small gold-plated piece starts with the first pin, then the second pin... The functions of each pin are as follows:
1TX+Tranceive Data+ (signaling+)
2TX-Tranceive Data- (signaling-)
3RX+Receive Data+ (receive signal+)
4n/cNot connected (empty pin)
5n/cNot connected (empty pin)
6RX-Receive Data- (Receive signal-)
7n/cNot connected (empty pin)
8n/cNot connected (empty pin)
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