I purchased this at a shop in Akihabara that sold arcade boards and related items back then. I believe it was made and sold by the shop staff using parts and boxes used for playing arcade games. The parts used are the same as those used in arcade cabinets, and the "bonus" is a few spare buttons from a Capcom Mini Cute cabinet. Please see images 9 and 10; I cannot guarantee that all of them work. This is for the home Neo Geo. I believe it worked with both the cartridge and CD versions; please check the connector shape in image 3. I tried various sticks back then, but this stick had the best quality in terms of responsiveness and input accuracy. The condition of the product shows signs of use and some dirt from long-term storage, but it's relatively clean with no rust. The condition is subjective, so those who are overly concerned about it should refrain from purchasing. Why not add it to your collection? Thank you for looking.