Fits Bernina models 540, 640-2, 707, 708, 709, 717-729, 730-732, 740, 740-750, 750, 801, 801S, 802S, 803S, 807, 808, 809, 810, 811, 811-819, 817, 819, 830,(TYPE 213, 2-pin connector) 830-832 and 840-850.