USB4 Science Section

In September 2019, USB4 was officially released with a maximum transmission rate of 40Gbps, the same as Thunderbolt 3. USB4 comes in two specifications: USB4 40 with a maximum bandwidth of 40Gbps and USB4 20 with a maximum bandwidth of 20Gbps. Consumers should be aware that USB4 40 is the full-speed interface.
In September 2022, the USB4 2.0 standard was exposed ahead of schedule, with a maximum speed increased to 80Gbps. It adopts a new data architecture, and the USB PD fast charging standard, USB Type-C interface, and cable standards will also be updated simultaneously.
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