Instructions
Turn off the Xbox.
Insert the memory unit into the "Memory Unit A" slot below the disc drive.
Power on the console and load the game you wish to save.
Load a single-player level. See your game's specific manual for help. A prompt appears asking you to sign into your profile.
Select a profile. This is the profile associated with your saved game data. A new menu loads, prompting you to choose a storage unit.
Select "Memory Unit." Your game saves to the memory unit.