This post will focus on the Fast I/O PCI-E board, I/O JAMMA board, and components.
The card you see installed with the 8P8C female connectors is the Fast I/O PCI Express card that is installed in a TX2. These boards allow you to connect the Fast I/O board to your TX2 hardware so that you may play games that require Fast I/O. The reason there are two ports is due to the fact that there are some games that support more than two Fast I/O boards at a time. The only game to my knowledge to date that does this is Darius Burst.
A close up view of the top side of the Fast I/O PCI-E board.
A close up view of the bottom side of the Fast I/O PCI-E board.
This is the illustrious Fast I/O (FIO) board. As you can see, it is pretty extravagant compared to most other I/O controller boards that are out on the market. I honestly have no idea why they even bothered to make this. This thing costs like ten times more than what a normal I/O controller goes for.
A close up view of the top left portion of the FIO board.
A close up view of the top right portion of the FIO board.
A close up view of the bottom left portion of the FIO board.
A close up view of the bottom right portion of the FIO board.
A look at the under side of the Fast I/O board.
This PCB is very simple. It is used in Sega Lindbergh cabinets to change the pinout of some of the pins on the harness that is installed inside the cabinet. Smart of them to do that, but did they really need to create a PCB for it? They could have just create a small connector. Maybe this was easier to mass manufacture, who knows...
An under side picture of the conversion PCB.
Here is a picture of both of the boards connected together with the harness that was provided. Again, the wires on the harness could just as easily have been swapped around...