> That is very close. The pitch matches at 3.96 mm.
> 3.9" * 25.4 mm/inch / 25 connectors = 3.96 mm
> But Jameco doesn't appear to carry the 25x2. The link was to a 12x2, which could
> work, but I did find another web site that has the Cinch 50-50A-30 connectors.
The web site I linked to was not Jameco, but Mouser. I could not find anything on Jameco's web site. The part was an edge connector that is 2 rows of 25 pins (for a grand total of 50 pins) manufactured by EDAC and has the EDAC part number designation of 307-050-500-202. (You can get the technical info at EDAC's website of www.edac.net.) The edge connector is .156" (3.96mm) contact spacing x .200" (5.08mm) row spacing (The same as Jamma.) and has solder eyelets. If your board uses pins similiarily spaced and sized to those on a Jamma board then this connector will work. If the contact spacing is different then this connector will probably not work.
I know absolutely nothing about the Cinch 50-50A-30 connector. I only use EDAC's edge connectors anymore.