Yeah, I've got a Gaplus and mine has that same Super Pac filter board in it. The Namco Super Pac used the same pinout, so apparently they didn't feel the need to redesign the filter board for Gaplus. (The US version of Super Pac doesn't use an edge connector, but uses headers instead). Anyway, I've heard you can remove them too, and they only cause problems. I've left mine in, since it's working.