Features: 1Optical Drive Simulation Board: for GDEMU optical drive emulation board, with for Gdemu's expansion storage memory card holder, replacing the CD ROM drive enclosure. Fast game reading speed and smooth game process. 2Fast Heat Dissipation: Replace the memory card holder, full metal card holder with two heat sinks, effectively improve ventilation and heat dissipation, read memory cards more smoothly, stable and wear resistant. High and stable performance . 3Compatible: This for GDEMU optical drive emulation board card for SEGA DreamCast console VA1 version host (for GDEMU expansion adapter). 100% game compatibility, perfect for running the original version for GDI image, and compatible for CDI image. 4Perfect Replacement: for GDEMU is an alternative to memory card based optical drives in for Dreamcast hosts. for GD ROM, for CD ROM drives will inevitably wear out and fail (as all mechanical devices do). 5Easy to Install: Optical drive simulation board is easy to install, the original optical drive holder can be removed and replaced with for GDEMU, no soldering and no modification to the machine board. No harm to the host. Package included: 1 x Optical Drive Board 3 x Fixer 2 x Heat Sink 1 x Drive Tray Insert 1 x Button 1 x for Gdemu Board Mounting Bracket 1 x Storage Card Extension Cable 1 x 32G Storage Card 1 x Screw Package 1 x Instruction Manual