Bitfunx GDEMU v5.15b Ultima Optical Drive Simulation Board for SEGA Dreamcast

This item ships from our: CHINA Warehouse
Ships to UK and most other Countries.

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Product description

Give your SEGA Dreamcast the power to play any game from any region with this GDEMU upgrade, replace your old or failing optical drive with this optical drive simulation board, Add your own SD card and .gdi images and enjoy classic, homebrew, translation patched games and more. Multi disc games are supported by using the little 'Next Disc' button on the board to switch discs. Available with an optional Mount Kit that saves wear and tear on your GDEMU's SD Socket and improves the airflow but replicating the shape of the original optical unit.


  • The new GDEMU optical drive simulation board, replace your optical drive with this high speed SD card interface.
  • Easy installation, fitting the GDEMU requires no modification to the machine board.
  • Can easily be removed if you wish to return your unit to stock.
  • 100% game compatibility, perfect running original GDI image, and compatible with CDI image.
  • No need for custom BIOS or other modifications.
  • Plug'n'Play solution.
  • NOTE: You will need to supply your own SD Card and GDI images if not buying an SD card bundle.
  • SD Card shown for reference only, included card will be of listed capacity.

Important Fitting Information:

These are only suitable for VA1 motherboard Dreamcast's. These can be typically identified by the a ① in the product label (see our images for an example)

There are three known Dreamcast variants:

  • VA0 – early production
  • VA1 – ~99% of all consoles
  • VA2.1 – late production
NOTE: VA0 and VA2.1 are NOT compatible with GDEMU's. While they can be installed inside a VA0 model and may appear to work, it is not safe and will eventually result in damage to the device and/or console itself. VA2.1 models changed the optical drive system and there is no possibility to fit the GDEMU in these.

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