Open Source Cartridge Reader V3-ALTER Build service Save both the roms *and* the saved games from yourNES, SNES, N64, GBA, GB/GBC, and Genesiscartridges directly onto a Micro SD card. V3-ALTERNew N64 controller pak save data write/read and N64 controller test functions added as standard from the original PCB designLEDs are moved to the surface, enhancing the design.All PCB board wiring has been rearranged by hand, and the GBA slots have been slightly relocated for the special acrylic case. You need to prepare a TF Card By yourself