A buddy of mine picked up one of these a little while ago off craigslist. He's been using it for Dreamcast via it's VGA port. I recently got a huge collection of RGB cables for old school systems to work with my VGA monitor, which is a Sony PVM-2530. I have included a picture of the back of the XM29 Plus. As you can see in the area marked RGB1 (sorry the flash kinda makes this area a bit bright), there is a VGA port, and underneath a 15-pin RGB port. According to the manual, this monitor is compatible with PC's and Macs (old Mac monitors do have the 15-pin RGB cable which is the same shape and style as an old PC gamepad connector). Also the manual states that it has a wide range of frequencies including 15khz.
anyone with this monitor have experience using it for RGB?