1. New v5.20(v5.20.3) GDEMU, easy to installation, no need to welding and to modification to the machine board.2. The GDEMU optical drive simulation board, rid of the optical drive sawing sound, reading speed for DC consoles board.3. Replacement part for your faulty optical drive emulation board.4. Only suitable for VA1 motherboard DC game machine, otherwise will damage GDEMU. Using connector, 't damage the console.White Interface Height of GDEMU is about 8mm.5. The GDEMU 5.20 accepts maximum memory card is 512 GB.New features:1) System code update2) Automatic timing profiles for SoA and RE:CV3) New INI option to manually cap GDEMU speedDetails:1) Fixed the issue of opening freezes.2) Fixed the issue of not being to a slot item caused by the Head Jewel Bug.3) Some images that were not recognized by the version of the firmware can now be recognized.Colour:blackMaterial:PCBPackage Contents:1 x Optical Drive Simulation BoardThe batches are different, 5.20 and 5.20.3 silkscreened on the product will be sent randomly, 't accept the specified, it will not affectOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.