Adding SSD into will requires M.2 nvme into the reComputer J1020, this post is based on Memory Expansion | Seeed Studio Wiki

The documentation is a bit vague on the NVMe SSD to be used other than very basic instructions. However, in my attempt it is smooth.

The SSD that was chosen as the expansion storage is the Kingston NV2 PCIe NVMe M.2 500GB. The J1020 requires the SSD to be M key.