Visual Diagnostics (Neo Geo AES) Updated Mar 15, 2026 · 10 min read · 0 viewing Log in or register to read the full article. Previous Diagnostics BIOS (Neo Geo AES) The Diagnostics BIOS was originally made by smkdan . Simply replace the real BIOS with this diagnos... Next CleanPower USB-C (Neo Geo AES) The Neo Geo AES has a mixture of 5V and 9V variant power inputs. This is dangerous as it can lead to...