I've taken this and installed Sophos UTM 9.6 on it and I expect it will be my firewall (no matter the OS or version) for a very long time (I got it with 8GB ram and 32GB msata)! I bought it to replace a virtual Sophos as well as actual Sophos firewall appliance.  This thing is tiny, very standard Intel hardware, silent and works great! Would definitely recommend!