TWISTED PAIR ETHERNET WITH RJ-45 CONNECTOR
If you hold the RJ-45 connector facing you (as if you were going to plug it into your mouth) with the lock tab on the top, then the pins are numbered 1 to 8 from left to right. The pin usage is as follows:
Pin Number Assignment
---------- ----------
1 Output Data (+)
2 Output Data (-)
3 Input Data (+)
4 Reserved for Telephone use
5 Reserved for Telephone use
6 Input Data (-)
7 Reserved for Telephone use
8 Reserved for Telephone use
CLIP FACING DOWN - This is how I wire the connector on twisted pair
ethernet: Three (3) and six (6) must be a twisted pair.
T568B RJ 45 Std Cross Over Cable --------------- --------------- 1. White Orange 1. White Green 2. Orange 2. Green 3. White Green (twisted pair) 3. White Orange 4. Blue 4. White Brown 5. White Blue 5. Brown 6. Green (twisted pair) 6. Orange 7. White Brown 7. Blue 8. Brown 8. White Blue