Question: what is the difference between usb c and thunderbolt 2?
Answer: Thunderbolt 3 will utilize a different connector than Thunderbolt/Thunderbolt 2 (using the physical port of USB C and Display Port 1.3). At 40 Gbps, Thunderbolt 3 doubles its theoretical potential for speed when compared to Thunderbolt 2 (20 Gbps).