USB 1.0 is divided into two versions:
The theoretical maximum rate of USB 1.0 Low Speed is 1.5Mbit/s or 0.1875MBytes/s.
The theoretical maximum rate of USB 1.0 Full Speed is 12Mbit/s or 1.5MBytes/s.
The theoretical maximum rate of USB 1.1 (i.e. USB 1.0 Full Speed) is 12Mbit/s or 1.5MBytes/s.
USB 2.0 is divided into two versions:
The theoretical maximum speed of USB 2.0 Full Speed (i.e. USB 1.1) is 12Mbit/s or 1.5MBytes/s.
The theoretical maximum speed of USB 2.0 Hi Speed is 480Mbit/s or 60MBytes/s.
The theoretical maximum rate of USB 3.0 is 5Gbit/s or 600MBytes/s.
USB 3.1 is divided into two versions:
The theoretical maximum rate of USB 3.1 Gen 1 (i.e. USB 3.0) is 5Gbit/s or 600MBytes/s.
The theoretical maximum speed of USB 3.1 Gen 2 is 10Gbit/s or 1250MBytes/s.
USB 3.2 is divided into three versions:
The theoretical maximum speed of USB 3.2 Gen 1 (i.e. USB 3.1 Gen 1) is 5Gbit/s or 600MBytes/s.
The theoretical maximum speed of USB 3.2 Gen 2 (i.e. USB 3.1 Gen 2) is 10Gbit/s or 1250MBytes/s.
The theoretical maximum rate of USB 3.2 Gen 2×2 (i.e. USB 3.1 Gen 2 dual channel, Type-C interface only) is 20Gbit/s or 2500MBytes/s.
The theoretical maximum rate of USB 4 (Type-C interface only) is 40Gbit/s or 5000MBytes/s.
Thunderbolt is divided into three versions:
The theoretical maximum rate of Thunderbolt 1 is 10Gbit/s or 1250MBytes/s.
The theoretical maximum rate of Thunderbolt 2 is 20Gbit/s or 2500MBytes/s.
The theoretical maximum rate of Thunderbolt 3 is 40Gbit/s or 5000MBytes/s.
