What is the difference between the RJ 45 Cat 5 or 5e cabling and T 568A and T 568B?

The two types of socket differ in their wiring schemes at the terminals, but there is no difference in performance. Each terminal is identified by a colour, which should match the colour of the connected cable. In Italy, wiring type T 568B is normally used. Vimar sockets mostly have universal wiring T 568A/B.