Just joined and saw this post. I've got 3 Prolinea/Presario 486 units and would be interested in modules for them if any are available or if another run is done of them at some point. My prolinea 4/50 was the first computer I ever had and it took some time to find one in usable shape. I love it but it does lag behind my other 486 machines without L2 cache. I've been looking for modules for a few years and just happened to stumble onto this thread today so I thought I would comment. Thank you for the time and effort to add this part to the retro community!