There are USB to Serial port adapters. Don't know if they work with a MAC or IMAC, but they are real. John A. Donaldson (...) (26 years ago, 16-Dec-98, to lugnet.robotics)
I seem to remember seeing an add-in board which would add PC style serial ports to Macs. Now this was several years ago; it was for the NuBus; and it was rather expensive. I believe it was done so you could interface lab equipment to Macs. It may (...) (26 years ago, 17-Dec-98, to lugnet.robotics)
