Unofficial board for the original Xbox modchip "ModXo" by Team Resurgent.
See the Release V0.2 for the 'old' board.
On 1.6 you will need to rebuild LPC before being able to install a modchip. On 1.0-1.5 you will need to use D0 (solder pad on board).
The KiCad (free application) source files (full schematics!) are included, so you can add/remove components based on your preferences.
The RP2040-Zero has components on the back of the board, to allow for easier installation, there's a cutout in the board. Though do note you can also install the RP2040-Zero using headers:
GNU GENERAL PUBLIC LICENSE Version 3, 29 June 2007
You can sell this board as-is, but disclose the source. If you sell modifications of this board (additional headers for LED strips / LCD / fan), share the modifications / source files under the same license.