Back to collectionESEN SEGA TERADRIVE MODEL 3 Sega TeraDrive appeared in Japan in 1991 and combined a PC-compatible computer and Mega Drive hardware in a single machine. Model 3 was the top version, equipped with 2.5 MB of RAM, a 3.5-inch floppy-disk drive and a 30 MB hard disk. Year1991 GenerationUnclassified ManufacturerSega / IBM Japan CategoryHome systems OriginJapan Game system / mediumMega Drive cartridges / 3.5-inch floppy disks / hard disk