For GDEMU Game Optical Drive Simulation Board Storage Card Extension Built in Free Disk for SEGA Dreamcast DC V5.15b Item Type: Game Optical Drive Simulation Board Product Material: ABS, PCB Color: Translucent Black Version for GDEMU: V5.15b Simulation Board Holder Interface Height: Approx. 8mm/0.31in Applicable Products: for DreamCast VA1 Game Console (for GDEMU Expansion Adapter) for GDEMU V5.5 GDEMU V5.15 GDEMU5.15B Upgrade: Changed The Storage Card Holder, Full Metal Card Clip, Read Storage Card More Smoothly, Stable Features: 1. Robust and Durable 2. Effective Improvement of Ventilation and Heat Dissipation 3. With Extended for GDEMU Storage Card Box 4. Alternative CD ROM Drive Chassis 5. Storage Card Memory Card Slot 6. Quick Switch Game Button