EEPROM Support: The only GameBoy Advance Flash Cartige that support EEROM, also the only one can run Super Mario Advance (Japanese/US version). 1M S-RAM Support: 1M S-RAM support, support all games, even like Yo-Gi-Oh 5 (use 64KB S-RAM) will support. Multi Games Support: Multi Games Support, you can put two 32M games into 64M flash cartige. Software: Windows 9X support, easy to use (upload, download and dump) Guaranty and maintain: One Year Free maintain, life time update system and service. Lowest Price: GBAS 64M is about 110 US and GBAS 128M is about 165 US.