This is a Memory Expansion Pak for the NINTENDO 64. I purchased it new and have kept it installed since then, so there are no noticeable scratches or stains. I haven't confirmed its operation recently, but I used to play games like Donkey Kong 64 with it. Would anyone interested in this like to purchase it? NINTENDO64 Memory Expansion Pak, with a red cover, improves game performance. - Brand: NINTENDO64 - Model: Memory Expansion Pak - Model Number: NUS-007 - Country of Manufacture: MADE IN JAPAN - Features: Red cover - Connection Terminals: Gold contacts Thank you for viewing.