Stuff

1000base-T, 1000base-LX and 1000base-TX

	1000BASE-T	1000BASE-LX	1000BASE-TX
Medium	Copper (Cat5e or higher)	Fiber optic	Copper (Cat6 or higher)
Cable Pairs	Four pairs	Two strands	Two pairs
Distance	Up to 100 meters	Up to 5 km (single-mode)	Up to 100 meters
Technology	Utilizes all four pairs of copper wires for transmission	Uses a long-wavelength laser for long-distance transmission	Uses two pairs of copper wires, requiring higher quality cables than 1000BASE-T
Use Case	Most common standard for desktop and server connections over existing copper networks	Long-haul links, data centers, and connections between buildings	Was designed as an alternative but is now obsolete; not widely used