Q: Can this board "PS3/PC Zero Delay USB Encoder PCB: Japan Style Controls", have a track ball installed onto it? Would like to add a track ball to this board to play MAME games.
A: The Zero Delay does not support trackball however, the IPac 2 does. Here is one example of use in conjunction with Raspberry Pi https://joshcaplin.wordpress.com/2016/03/23/homemade-arcade-cabinet-with-a-raspberry-pi/
(image Joshcaplin. "Home Arcade with a Raspberry Pi & RetroPie (with Trackball)." Josh's Random Tech Blog. N.p., 06 Apr. 2016. Web. 26 Dec. 2016.)