I installed Roon Rock on an old Sony Vaio notebook. The question of why is answered quickly. Cheap, old hardware, an external USB hard drive, a RasPi with a DAC HAT and I can show my friends what Roon is capable of and what is feasible with little material effort and some know-how.
But: Rock found no network connection on the Vaio. The Vaio has a Marvell network chip. As it stands, it is not supported. My question: Which network chips are supported? So far, it has worked well with Intel, but with a Realtek RTL8111E chip I also had no problem.