Complex sentence: IBM PC compatible CGA, HGC and some EGA graphics cards also featured a connector for a light pen, as did the Thomson MO5 computer family, the Atari 8-bit and home computers.
Split into simpler sentences: IBM PC compatible CGA, HGC and some EGA graphics cards featured a connector for a light pen as well. Even some consumer products were given light pens, such as the Thomson MO5 computer family as well as the Atari 8-bit and home computers.