Chevrolet UPLANDER 2007 Owner's Manual page 346

Wireless Game Controller
The wireless game controller will allow the rear
seat passengers to interact with the video games
being played. While playing a game, press the
buttons on the controller to send commands to the
game being played.
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Most of the functions on
the game controller will
vary, depending on
the game being played.
DMS (Digital Media Storage) Cartridge
This type of cartridge should allow for storage of up
to 5,000 songs in MP3 format, or up to 15 typical
movies in MPEG format, and hours of game
collections, or any combination of the three.
The DMS cartridge is a
palm-sized 40GB
portable hard drive.