Thunderbolt 2 is a big deal. In fact, so was Thunderbolt 1. Developed by Intel®, Thunderbolt 1 provides two separate 10Gb/s channels, running in opposite directions. Thunderbolt 2 can combine the two separate 10Gb/s channels into a single 20Gb/s channel, but flowing in only one direction. It’s like opening both sides of a bridge to traffic in the same direction during rush hour. So, Thunderbolt 2 can be up to twice as fast as Thunderbolt 1, depending on where data needs to flow.