caféflex is an SLC, microSD (MLC replacement, use ISFSHax) and Wi-Fi module relocation FPC for WUP-50 Wii U motherboards. See this BitBuilt thread for install photos.
For use with PortablizeU and isfshax.
Designed in KiCAD and manufactured by PCBWay.
Source: https://github.com/mackieks/cafeFlex