A surgical energy system includes a first and second surgical instruments and a generator including a universal interface. The first surgical instrument includes a first instrument connector having one or more instrument couplers disposed in a first instrument coupler configuration. The second surgical instrument includes a second instrument connector having one or more instrument couplers disposed in a second instrument coupler configuration. The first and second instrument coupler configurations are different. The generator includes a universal interface including generator couplers arranged to provide generator coupler configurations at the universal interface. Each generator coupler configuration accommodates one of the first and second instrument coupler configurations in order to electronically couple the generator to a respective one of the first and second surgical instruments.