Good quality product. It boots up, and shows a menu where you select the game, it then writes this game to the chip and the Gameboy plays it as if it were any other game. Transferring ROMs was easy. Just drag and drop. You can organise them into folders too. I just downloaded ever Gameboy game that exists, put them into alphabetical folders and copied them to a 2GB micro SD card. Much cheaper than buying individual cartridges.
