These are reproductions of the original MV-IC memory card reader boards and also have the dual headphone sockets. Tested on a 4 and 6 slot with original PCMCIA cards and newer nvram cards too. The original had a metal bracket so I do not know how easy it will be to mount into your cabinet if that is missing.
Cables will be sold separate made to the length you require or you can source the one of the originals.
PCMCIA save game cards are not included.
Mounting brackets are not included.
Audio cables are not included.