Hello! Just a question about the power button at the SATA HAT: how does it work? Is it like a hard shut off? I guess, if i want to power down the NanoPi M4 there are some things to do: close processes, clean write cache and so on - a regular shut down will take some time before powering off. I've al...

Regarding the M.2 form factor for SSH on the NanoPi R5S, it supports the M.2 2242 form factor. This means that you can use an M.2 SSD with the 2242 size specification. The 2242 specification indicates that the M.2 SSD is 22mm wide and 42mm long.