The USB Implementers Forum (USB-IF) announced the publication of the USB 3 specification. 2 - high-speed interface for data exchange between computer and mobile devices.

About preparation of USB 3 standard. 2 was announced last summer. New specification compared to USB 3. 1 Gen 2 provides for doubling the maximum possible data transfer rate - from 10 to 20 Gbit / s. This indicator will be available when using cables with USB Type-C connectors. For comparison: Thunderbolt 3 interface with USB Type-C connector provides up to 40 Gbps throughput.

To achieve a speed of 20 Gbps on a USB interface supporting the USB 3 specification. 2 it will not be necessary to purchase new cables. However, it is important to note that doubling the bandwidth is guaranteed only for certified USB Type-C cables.

USB Type-C Cables with USB 3 Support. 2 will be transferred to a two-channel mode of operation. Each of the channels will provide a speed of 5 or 10 Gbit / s. Thus, the total throughput can be 10 or 20 Gbit / s.

In more detail with the USB 3 specification. 2 is available here.