CXL is kind of like that. I don't think there's specifically an M.2 form factor but it's (in hand-waving terms) RAM over PCIe. https://en.wikipedia.org/wiki/C

CXL is kind of like that. I don't think there's specifically an M.2 form factor but it's (in hand-waving terms) RAM over PCIe. https://en.wikipedia.org/wiki/Compute_Express_Link https://en.wikipedia.org/wiki/Compute_Express_Link