Forum Appliances was the ONLY parts company I found that was able to get this PCB. I needed it for a SM-55 mixer. It is listed for the SM-70 model, but worked fine in my model. My mixer was only running at the slowest speed. Once I installed this PCB, the mixer had all the speeds working again. My mixer was long out of warranty and Cuisinart wanted too much money for repair. Was not a difficult task to remove and replace the PCB.