The InterAct DexDrive Game Save Exchange System for Nintendo 64 is an external attachment memory card specifically designed for the Nintendo 64 console. Made by InterAct in the United Kingdom, this model (SV-1128) allows players to save and exchange game progress on their PC or other compatible products. This in-box complete system offers a convenient solution for storing and accessing game data, enhancing the overall gaming experience on the Nintendo 64 platform.