Question: what is the difference between thunderbolt 2 and 3?
Answer: – Thunderbolt 2 provides two bi-directional 10 Gbps channels, which can transmits and receive data at the same time, meaning a total of 20 Gbps outbound and 20 Gbps inbound. ... Thunderbolt 3, on the other hand, provides two bi-directional 20 Gbps channels, providing a total of 40 Gbps outbound and 40 Gbps inbound.