Complex sentence: The NC150 is an intermediate version of the NC100 and NC200 computers, but was available only in Italy and France; its case had the same design as the NC100, but it included the games and spreadsheet later seen on the NC200.
Split into simpler sentences: The NC150 is an intermediate version of the NC100 and NC200 computers, and was available only in Italy and France. Its case had the same design as the NC100, but it included the games and spreadsheet later seen on the NC200.