Amazon.com: Xbox 360 Memory Unit 512MB (original Xbox 360 console only) : Xbox 360 Accessories: Video Games
Xbox 360 memory card 256 MB - XQ Gaming
Can you use this memory unit to transfer your xbox original save games (like conker, halo 2 ultimate spiderman..) from one hard drive to another one? : r/xbox
All about Xbox 360 Storage and USB | Drew1440: Blog