The invention relates to an adjusting drive (1) comprising an electric motor (2), an output shaft (3), a printed circuit board (4), a housing (6) and a connection interface (5), wherein the electric motor (2) is contacted with the printed circuit board (4) and is designed to drive the output shaft (3), wherein the housing (6) accommodates the printed circuit board (4), wherein the connection interface (5) comprises a direct plug connection with contacting pads (9) directly on the printed circuit board (4), and wherein the contacting pads (9) are designed for direct contact with a connector (7), wherein the connection interface (5) comprises a housing opening (8) in the housing (6) as access for the connector to the contacting pads (9), and wherein the printed circuit board (4) is dimensioned to be narrower than the housing opening (8) such that the printed circuit board (4) can be inserted through the housing opening (8) into the housing (6).