Rock64, USB3.0 to SATA with 2 HDDs using USB3.0 hub Have been using Ayufan's for a couple of years. Very stable. However his build is not being updated since last October, I tried Armbian 4.4.y legacy in December and yesterday, thinking newer build of kernel might be worth the trouble. Same thing. Freezes a few times in an hour. It was early stage of configuring the server, I don't think it's any specific programs causing the freeze. I was installing docker or OVM or just 'ls -la' at the time of the freeze. On the other hand, my Orange Pi Zero on Armbian is very stable. It doesn't have anything attached to it though.