The invention relates to an adapter for a device for connecting a wiper blade to an arm of a wiper system. The connection device includes at least a connection module and the adapter which extends in a longitudinal main extent direction. The adapter includes fastening means for at least a plurality of different types of wiper arms, the fastening means being configured to provide at least four different fastening planes in each of the longitudinal and transverse directions and also in a vertical direction perpendicular to these two longitudinal and transverse directions.