I made my own AV booster for the PC Engine. I made it so that it can output video from the expansion bus. You can use it just by plugging it into the expansion bus. It can output video and stereo sound. ● Items for sale AV booster unit ※ PC Engine (old, Core Grafx), video cable, software, display, and AC adapter are not included. ● Information Video cables (yellow, white, red) are sold at home centers, Amazon, and electronics retailers. ● Caution Since this is a personal creation, there may be layering marks, unevenness, scratches, and distortions on the parts. I have confirmed that it can be connected to the PC Engine. Please connect it with the screw heads facing up.