I made a PC Engine AV booster myself. I made it possible to 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 with the screw heads facing up. For purchases made by January 4th, it will take 7 days from payment to shipment.