The difference between the six types of crystal heads and the five types of crystal heads can be seen on the head of the crystal head. The eight holes are neatly arranged in type 5, and the one with staggered top and bottom is type 6. Category 6 modules are best plugged into Category 6 crystal heads. However, a network cable made of a mix of Category 5 crystal heads and Category 6 crystal heads can still pass through. Category 6 is better than Category 5 in that it can carry data with a large flow of more than 1,000 M.

The six types of crystal heads are generally used in the G network, so the copper core is relatively thick, so the six types are arranged in staggered layers, that is, divided into two rows, four on the top and four on the bottom. The five types of crystal heads are generally used in the M network, so they are arranged in a straight line, and the general sales points can be clearly distinguished. The eight holes are neatly arranged in the 5th category, and the staggered up and down is the 6th category. Category 6 modules are best plugged into Category 6 crystal heads. However, a network cable made of a mix of Category 5 crystal heads and Category 6 crystal heads can still pass through. Category 6 is better than Category 5 in that it can carry data with a large flow of more than 1,000 M.