Usually, no. Don’t let this one getcha. Most POS equipment is compatible with multiple processors and can be reprogrammed when you switch processors. Some processors will charge you a fee to do this, some might do it for free. If you are buying equipment for the first time, make sure to buy equipment and software compatible with many providers so that you won’t have to buy new hardware if you decide to switch. The four major manufacturers of POS equipment, Hypercom, Verifone, and Lipman Nurit make equipment compatible with most processors.