USB 3.2 specification describes doubling throughput

USB 3.0 Promoter Group has announced the final draft of the USB 3.2 specification. The specification states that USB 3.2 hosts and devices can support two 10Gbit/s lanes, effectively doubling throughput.

The effective speed for USB 3.2 will therefore be 20 Gbit/s. Multi-lane support requires both the host and devices to have USB 3.2 chips, but users can use existing USB-C cables as long as they are certified for SuperSpeed ​​USB 10Gbit/s. As far as multi-lane support is concerned, manufacturers can choose between two lanes of 5Gbit/s or two lanes of 10Gbit/s. The encryption techniques and physical layer of SuperSpeed ​​USB are preserved.

Devices that meet the USB 3.2 specification remain compatible with USB 3.1 and earlier generations. It is not yet clear how hardware with support for USB 3.2 will be recognized. The USB 3.0 Promoter Group will not provide details until the final specification is formally finalized. The group previously made it clear that it will continue to use the SuperSpeed ​​name, which simply refers to the speed, including logos. The specification will be published during the USB Developer Days North America, which the USB organization will be holding in September this year.