The Rockpro64 comes with a PCIe x4 port; and it works well with a M.2 NVMe adapter. You could try it with a double M.2 adapter, but I'm not sure what speeds you

The Rockpro64 comes with a PCIe x4 port; and it works well with a M.2 NVMe adapter. You could try it with a double M.2 adapter, but I'm not sure what speeds you can get with those.