A:Answer The motherboard in the one I have, the BB930, (I think you meant that instead of BB903) is an Asus Prime H270-Plus. There are empty slots and two additional memory slots open. I don't know if every machine has the same motherboard, but I would imagine that it should be consistent. You never know. The good thing is that they do include all of the individual manuals for the various components (video card, motherboard). You don't see that with a lot of other off-the-shelf PC manufacturers.
