High quality RJ45 cable crystal head， both copper purity， or plastic quality，much better than the general crystal head， making up a higher success rate. The production of ordinary cable choice!

Colour and arrangement method on the twisted pair is a unified international standard strict rules， now commonly used is the TIA/EIA568B should use the following in a line order (from left to right horizontal sorting，crystal head with buttons Duan Chao below): (TIA/EIA568B)

1-> white orange

2-> orange

3-> white green

4-> blue

5-> white blue

6-> green

7-> white brown

8-> Brown