Sony PlayStation ONEchip Modchip Install Guide | Consoles Unleashed
Is this a mod chip??? : r/psx
Darthsternie on Twitter: "Anybody who knows anything about PS1 Modchips able to help me tell what this modchip could be? I can't these solder points anywhere online. It's a PSOne with 12c508A
PU-22 PSX Chip mod - 12c508/9
How to Install a Modchip in an Original PlayStation | MM3 PS1 Modchip Install Tutorial - YouTube