I have built several cabinets using the Pandora's Box 3 and 4 with no issues (using 19" Dell Ultrasharp 1280 x 1024). I bought the new 4s version and installed it into a cabinet with a widescreen monitor and had not issues. When I tried installing it into a cabinet with one of the standard ratio Dells, it gave me the following message: "Cannot Display This Video Mode Optimum resolution 1280 x 1024 60Hz". You can still hear the games if you start it up. I tried several of my standard Dell monitors and got the same message. I tried different boards and they do the same thing. Have they changed something with the 4s that makes it not compatible?