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In theory, I guess. Bandwidth should be enough for 1-lane PCIe, but I've not heard of a standard that does such over USB3 (disclaimer: Not actually hardware engineer).

There have been precedents at least, but I wouldn't count on it. This looks like a custom-engineered solution. And if there ever is one, it won't be the sharpest knive in the drawer and probably very expensive. :)
 
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