I never got around to using this A203 carrier board that I just bought, because it turns out I have an -A02 Jetson Nano, and it only works with -B01 (or later, I guess).
I bought this to be able to use an NVMe SSD with my Jetson Nano.
Seeed refuses to RMA it, despite the product web page not indicating it won’t work for the -A01. I paid a total of USD186.12, would sell it for $150 plus shipping.