Quote
"The Mac II also had another nifty graphical trick up its sleeve: It was the first Mac to officially support multiple monitors. In fact, the NuBus system was so flexible that you could install up to six separate video cards in the Mac II—each with its own display—and the Mac System software would automatically extend the desktop across them. Such a capability was unheard of even recently in the PC clone world, but the Mac II could do it in 1987."
