I was the buyer. I'm in the process of fixing them. One of the two units is in fact the 10MB model (see my other post), but the ROMs had been swapped, and it took me a while to figure it out. The two HDDs work, and after a few fixes (3 ICs replaced, one pin of the ROM was broken), I've got the two controllers to work. I'm now fixing the two Astec PS which hopefully won't be too much hassle. So all in all, I'm fairly satisfied with my purchase. As some of you stated, these 10MB has quite rare and hard to find