Nice find, Mr. Boosh! Now the only problem is length...if we take a look at the motherboard layout: If you try to run it out the pen clip hole, you'll need ~200mm cable and it might press up against the battery and screen. This may cause heat and EMI issues for the digitizer if you're running x4 eGPU data over it. If you try to run the cable through the speaker vent, you'd need about ~150mm cable and you'd introduce bends in the cable, but you'd have a little more room to play with. The 'perfect' card would be an m.2 to TB3 adapter with a ribbon connect to an external USB-C port. Haha, I wonder if those exist?