Cable - normal cross

Cable 568-A AND 568-B
crossover

Connector---Connector
(A) ------(B)
1 ------- 3
2 ------- 6
3 ------- 1
4 ------- 5
5 ------- 4
6 ------- 2
7 ------- 8
8 ------- 7

13, 26, 45, 78 change position
normal cable use only 1,2,3,6 and is straight through
cross cable only change 13 and 26