The Z-JAMMA 56P-3.96S connector is popular due to its grip being not too tight and not too loose. No more "kung-fu grip" action when removing your boards or weak connections causing connectivity issues. Well priced and high quality. These are always handy to have around and can be used to refresh your cab or in projects such as adapters, pass throughs, etc. 56 pin (3.96 mm pitch) as used in the JAMMA standard.
