That looks a lot like the mainboard from the Western Digital Sharespace I had about 10 years ago. I was recently wanting a NAS again, but came to the conclusio

That looks a lot like the mainboard from the Western Digital Sharespace I had about 10 years ago. I was recently wanting a NAS again, but came to the conclusion that the best bang for your buck was just grabbing a cheap mini-ITX board and processor as the price of dedicated NAS boxes was not much different and was far less flexible. Then you would have full-fat sata, even m2 for a boot drive, whatever RAM you wanted etc. I know it's not a very exciting solution...