According to the latest news,The Linux 5.6 kernel will officially support USB4, which is expected to be released in April 2020.

The USB4 standard was just released in September this year. Based on the lightning protocol opened by Intel, the bandwidth has doubled again to 40Gbps, which is exactly the same as lightning 3. At the same time, it is downward compatible with lightning 3 and USB 3. X / 2.0, and only has a type-C interface.

More than two months ago, Intel open source engineers submitted code and patches supporting USB4 to the Linux kernel, the new code is less than 4000 lines, because USB4 is basically a version of thunderbolt 3, and many codes are also general.

But the USB4 related code finally presented in the Linux 5.6 kernel is less than 2000 lines, which is very compact, but what it needs, including host and device support, source code and a series of other functions.

It's not clear when Windows 10 natively supports USB4, but it's certainly not that complicated.