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|Release date = December 12, 1991 (JP)<br/>October 15, 1992 (NA)<br/>April 19, 1993 (EU)|Media type = [[CD-ROM]], & [[CD+G]]}}The |image = Sega Mega-CD (メガCD Mega Shī Dī) (released as the -Model1.jpg|image2 = Sega -CD in North America) is an add-on device for the [[Model2.jpg|imagecaption = '''Top:''' Model 1 Sega CD & Model 1 Sega Mega DriveGenesis<br/Genesis]] video game console, designed and produced by >'''Bottom:''' Model 2 Sega. The device adds a CD-ROM drive to the console, allowing the user to play CD-based games and providing additional hardware functionality. It can also play audio CDs and CD+G discs.& Model 2 Sega Genesis}}

The Sega Mega-CD (メガCD Mega Shī Dī) (released as the Sega CD in North America) is an add-on device for the [[Sega Mega Drive/Genesis]] video game console, designed and produced by Sega. The device adds a CD-ROM drive to the console, allowing the user to play CD-based games and providing additional hardware functionality. It can also play audio CDs and CD+G discs.The first version of the Mega-CD sits underneath the Mega Drive console and loads CDs via a motorized tray. A second version places a top-loading CD-ROM drive to the right of the console and is intended primarily for use with the redesigned Mega Drive II. Both versions of the Mega-CD are compatible with the initial two versions of the Mega Drive console, but not with the Genesis 3.There is also a Mega-CD module, used as an add-on device available for the [[Pioneer LaserActive]] system.==Technical specifications==[[File:Sega_CD_mainboard.jpg|230px|left]]