Capcom vs SNK 2 ERROR "JAMMA I/O BOARD NOT FOUND"

[OldFoo]

Hey guys,



newb here. Just got my first Naomi setup. Complete with GD-ROM.



Anyway, I'm trying to test this stuff out to see if it works. So far, so good, I can get Capcom vs SNK 2 loaded onto the DIMM and it attempts to boot, but it always stalls after it a certain point, showing the following error:



ERROR.

JAMMA I/O BOARD NOT FOUND.



I currently have it hooked up to a computer monitor via VGA, powered off a converted PC power supply that was also being used to power it in a cabinet by the previous owner. He was using a SEGA I/O to use it on a JAMMA cabinet. I tried plugging in the SEGA I/O, and it still shows that error. The SEGA I/O is being powered by a 6-pin harness running to the power supply. I have a USB cable running from the Naomi mainboard to the SEGA I/O.



What am I missing here? I'm not trying to play it, just trying to get it to the title screen and ensure everything works. At this point, I am sure everything works, save for maybe the I/O converter, but I'd love to see it actually run the attract/demo mode.



Any ideas?



If it helps, all four of the dipswitches are set to OFF.



Thanks in advance.

[OldFoo]

Quick update: Resolved the issue. I didn't plug in the USB cable all the way into the I/O. LOL.



Works fine now.



A clear pinout for the "kick" harness on a SEGA I/O would be nice... the connector and the wires are already there, I just need to know which wire goes where. I read that the 1P 4/5/6 come off the I/O and the 2P 4/5/6 come off the JAMMA harness?



Thanks