I have an Agetec stick that has been converted for use with Naomi / Supergun / Atomiswave / Neo-Geo or drop in your own PCB for use with another system. Cable uses standard 15-pin plug. Excellent condition. Has a Sanwa stick with blue ball and blue Sanwa OBSF-30 snap-in buttons.
I also have a spare Agetec PCB. It includes the Dreamcast cable. As you can see from the photo, it is missing the male plug for the joystick wiring. I have no idea how much it is worth, so please feel free to make an offer.
Thanks for looking.