Feature 1 [Easy To Install] New version 5.20 (5.20.3) for GDEMU, easy to install, no soldering and modifications to the board are required, using the original interface will not damage your console. 2 [Compatible Model] The optical drive simulation board is only available for SEGA DreamCast VA1 console motherboard, otherwise the for GDEMU will be damaged. the white interface height is about 8mm/0.31in. 3 [New Features] This console pptical drive simulation board features system code updates, automatic timing files for SoA and for RE: CV, and a new INI option to manually limit for GDEMU speed. 4 [Quiet And Fast Read] For GDEMU optical drive simulation board, remove the jagged sound of the optical drive and read for DC console board faster to ensure you enjoy your games. 5 [Replacement] Replace faulty optical drive simulation board parts, accepts up to 512GB storage card. Comes with 2 heatsinks to ensure efficient ventilation and heat dissipation.Item Type: Optical Drive Simulation BoardMaterial: PCBScope of Application: For DreamCast VA1 HostSimulation Board Version: V5.20 (5.20.3)New Features:1. System code update2. Automatic timing files for SoA and for RE:CV3. New INI option to manually limit for GDEMU speedDetails:1. Fixed for Arcadia opening lag issue.2. Fixed for Veronica Tiger Head Jewel bug causing inability to get slotted items.3. Some images that could not be recognized by older firmware versions can now be recognized.For Example:For -Director's Edition, for AsamiFor Okusama wa JoshikouseiDirector's Version4. Some GDI images that have been previously reorganized by tool streamlining are recognized on older firmware versions, but may not be recognized and unrecognized on newer firmware versions.For Example:US version of simplified reorganization of for Criminal 2 can not be recognized.But it can recognize the unmodified streamlined version of the GDI mirror of for 2. Package List1 x Optical Drive Simulation Board2 x Heat Sink3 x FixerNoteIt is possible to update 5.20 for GDEMU, but the update process for this product is complicated and can become a brick if you make a mistake.