Features: The new gdemu optical drive simulation board, read the game fast.Simple gdemu installation, no welding, no damage to the host.Good compatibility, can read GDI and CDI.High and stable performance ensure you enjoy your games.Perfect for SEGA Dream cast Game, effectively improve effectiveness.Upgrade: changed SD card holder, Adopt all metal card holder, SD card reading is more smooth and stable.Specification:Material: ABSWeight: 100gSize: Approx. 10*6*2cmModel: for SEGA Dream cast GameGame Accessories Type: Other GamesType: 5.15Note:This GDEMU is only suitable for DC val computer, otherwise it will burn GDEWU. It ban switch on the power when installing.SD card recommendation: have a stable performance when compatible FOR dongzi and shandi as well as kingston. You have to format your card to FAT32 document system. It is advised that use the 32 GB card and support up to 128G card.GDEMU document system setting up:Download the GDEMU 6.0 document in SD Card,01 is a system folder which can not save games, and built 02/03/04/05,etc. Literally, you can built up to 9999 system folder. You can put CDI and GDI document in the folder and every single game in every separate folder. A and B game are supposed to putted in two folder, at the same time, A AND B,C are supposed to putted in three following folder, AND so on.You can press the button on the board to finish the record to switch up next game after finish playing game A.Usage:Prepare one SD card and then format it to FAT32,please notice ,when you use the card over 32GB capacity, you can not use FAT32 to format the card. It is acquiescence that you can only use EXFAT.Directory storage:GDEMU can read Number directory format under SD card. Literally, you can support 9999 Disc images in one card.Number directory format:1-99 Slot is expressed by 2 digits,100-999 is expressed by 3 digits,1000-9999 is expressed by 4 digits.Operation steps:1.Disconnect all cables from the console2.Remove disc from drive and close the lid3.Detach modem add-on, place the console upside-down on a firm surface4.Remove 4 screws located in the corners using a Phillips PH#2 screwdriver5.Hold the console by sides with both hands and carefully rotate it to upright positionImportant: Make sure the now unscrewed upper cover does not fall down. It holds down part of the GD-ROM drive assembly, which might became separated and pull/damage the ribbon cable.Package Included:1 x Optical Drive Board1 x Fixed BucklePacked Safely in Retail Box