The official also revealed that the corresponding USB Type-C interface standard and USB PD power protocol will also be updated simultaneously, and the specific content will be announced before the USB DevDays in November this year.
However, judging from the information released so far, it seems that active cables are required to achieve 80Gbps transmission, and passive cables can only reach 40Gbps at the highest.
In addition, the accompanying protocol update also covers USB 3.2 transport layer definitions beyond 20Gbps, incorporating the latest DP and PCIe standard content, and compatibility with USB4 v1.0, USB 3.2, USB 2.0 and Thunderbolt 3.