I recently bought a Onyx DS, Acekard2, 2GB Kingston MicroSD online and am currently waiting for them both to arrive in the mail. I made sure to do a good amount of research into how everything works and I believe I got it all down, the only thing is I'm confused about GBA/GBC games. I understand that most flashcarts can't run GBA roms and you would have to purchase a 3-1 expansion card to run them. Why is this? I would figure if a card could run a ds rom it could run a gbc rom? Why doesn't it? What's preventing it from doing so? Just how it's manufactured? Another question is how dose the 3-1 card work? Do you put the roms onto the 3-1? Or does the 3-1 make the flashcart recognize GBA roms? Any help is appreciated. BTW, I'm sorry if this is the wrong section for asking this. I wasn't sure if I should go to GBA Emulation, Acekard 2, EZ-FLASH or what. I'm sorry if this is the wrong section.