Eight Position (RJ-45) Modular Cable.

T568B (with clip down)	T568A (with clip down)

UTP consists of 4 twisted pairs. The standard colors are:

white/blue - blue
white/orange - orange
white/green - green
white/brown - brown

Hub to Hub or Computer to Computer connection: one end T568A, other end T568B (Crossover Cable).

Hub to Computer connection: T568B on each end.