These were the last models to feature the 68000 CISC CPU. The Quadras all featured 68040 CPUs and featured desktops, LC's and server models. Macintosh II's with an appropriate CPU/MMU combination can run NetBSD or A/UX.
All models featured a SCSI bus, and they all had the ability to display color. The Mac II's were expandable unlike the first generation Macintoshes with NuBUS slots, and some models even had PDS (processor direct) slots.
The Macintosh II series all had a 68020 or better CPU and ran System 4 through 7.5 depending on model.
