This is a tiny micro switch accessible from the SD card slot. I used a jewelers screwdriver. 5. I inserted the SD card in the cartridge and I was ready to go. The menus are very easy to navigate, just select your ROM file and Hit the A button on your Nintendo 64. 6.
https://www.amazon.com/EverDrive-64-v2-5-Nintendo/dp/B079X2HK7W

