Just spent lots of time with Xiaomi Thunderbolt ANC headphones and Lenovo Thinkpad Carbon-x1 laptop, with no luck.
Upon connection, the device is clearly recognized, a new line appears in device manager: "Intel(R) USB 3.1 eXtensible Host Controller" which is not present when phones are disconnected. However, the device never appears as an audio device to my windows.
Ideas would be much appreciated..