Circuit Board for chain and belt drive models. Genie has updated this model # 36448A but be assured that it is safe to use on you devices listed below. Please note: While the circuit board you receive will be compatible with the opener model numbers listed, the model number and/or color of the included plastics may or may not match the model and/or color of your existing opener. This is purely aesthetic and has nothing to do with the operation of your unit.