Motorized manoeuvring device (1) intended to manoeuvre a moving windable fabric screen (3), the motorized manoeuvring device comprising: an actuator (4), comprising a hollow housing (41) containing a gear motor, a mounting end-plate (7a), characterized in that the end-plate (7a) comprises a first support (11) extending from the end-plate along a first longitudinal axis (X-X′) and cooperating with the housing (41) of the actuator (4) and in that it comprises a second support (12) extending from the end-plate along a second axis distinct from the first (Ya-Ya′, Z-Z′) and in that the hollow housing, notably the tubular hollow housing, of the actuator, is closed by the first end-plate support.