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Thunderbolt is the fastest connectivity format to date, with speeds between 20 gigabits per second (Thunderbolt 2) and 40 gigabits per second (Thunderbolt 3). Audio interface manufacturers are excited about this amazing speed, and many experts see Thunderbolt as the next format that the pros will embrace.

Unfortunately, things got confusing when Thunderbolt 2 was quickly replaced by Thunderbolt 3 just as audio interface manufacturers rolled out a variety of Thunderbolt 2 interfaces. Each has a different type of connector (see Figure 3-9) and a different protocol, which I outline here:

 Thunderbolt 2: Thunderbolt 2 uses the mini DisplayPort and can transfer data at speeds up to 20 gigabits per second (Gbps). This was available on computers between mid-2013 and late 2015.

 Thunderbolt 3: Thunderbolt 3 employs the USB-C connector and doubles the speed of Thunderbolt 2 to 40 Gbps. You can find Thunderbolt 3 ports on computers and peripherals made after late 2015.

FIGURE 3-9: Thunderbolt is a high-speed data-transfer protocol that comes in two varieties: Thunderbolt 2 (left) and Thunderbolt 3 (right).