I already did answer you on Discord but to clarify, i think both products do the same when we are talking about use USB controllers and JAMMA/NEOGEO, but with different features.May I know how UD-USB Decoders are different from USB2DB15 and CS Ver. for JAMMA/NEO GEO? It appears to me that both perform the same job, which is to bridge usb controller and JAMMA/supergun.
From what I understand his new job takes up a lot of his time now. Arcade stuff had to take a back seat.I sent him a message here as well as a direct email, no response for over a week.