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Could you share PCB files for that? I don't have experience with designing PCBs myself, but with the files I should be able to just order them from PCBWay.

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Here are the original kicad files https://github.com/zevv/m2-to-usb

Please do check for yourself if this all makes sense, and I will not take responsibility for any fried laptopts or dongles. Note that the power supply for the dongle is too low: USB is supposed to deliver 5V, but on the M.2 only 3v3 is available. I decided to just give this a try and my Logitech dongle seems to be perfectly happy at this voltage. This might not be the case for others.

This is something that could be rectified (if you pardon the little pun) with a 50 cent 3v3 to 5v TI charge pump if one wanted.

Also make sure that the data lines do not have over-voltages then (level-shifters on these?).

Also some firmware (bios) only accept certain devices on the M2 slots.

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