Thanks for the review. It would be interesting if you could include transcoding performance in your NAS reviews, as this is a common use case now a days.

I've had no issues with my F2-421 since ive had it ~10 months. For 2.5g connection you could use a compatible USB3 to 2.5g adaptor. Works fine with playing 4K while running my Jellyfin media server within a Docker container.