Say Goodbye to Confusing Naming! USB4 v2.0 Officially Launches, Ushering in the 80Gbps High-Speed Era

The USB-IF Association has officially announced the landmark release of the USB4 v2.0 specification. This update not only debuts the brand-new USB 80Gbps interface with doubled transmission speed, but also completely restructures the USB interface naming system, putting an end to the long-standing industry pain point of confusing specification naming.

The revamped naming system clearly classifies all bandwidth levels: USB4 v2.0 corresponds to USB 80Gbps, USB4 to USB 40Gbps, USB 3.2 Gen2x2 to 20Gbps, USB 3.2 Gen2 to 10Gbps, and USB 3.2 Gen1 to 5Gbps. Classic USB 2.0 and USB 1.0 retain their original names due to their lower bandwidth, minimizing user confusion. Meanwhile, the USB-IF has updated certified logos for packaging, ports, and cables, uniformly marking bandwidth and power delivery parameters to provide clear visual identification for compliant products.

At the protocol level, USB 80Gbps is deeply optimized, breaking down barriers between data transmission and display protocols. It is compatible with DP 2.0 and PCIe 4.0 and shares the PHY physical layer, truly realizing one cable for multiple uses. A single interface meets diverse needs such as high-speed file transfer, 8K ultra-HD screen projection, and device interconnection. For compatibility, USB 80Gbps is fully backward compatible with older USB protocols and adopts only the USB Type-C form factor, unifying device compatibility standards and reducing usage and adaptation costs.