Optoelectronic module, intended to ensure a conversion of an electrical signal from a main electronic board into an optical signal or vice-versa, the optoelectronic module comprising: - a housing inside which are fixedly housed: • the main electronic board; • at least one optical subassembly, OSA, comprising: • at least one optoelectronic component, adapted to transmit or receive a light signal by its top surface along an optical axis, • at least one holding sleeve adapted to hold, with centring within it, a complementary optical ferule incorporated in an optical contact element extending about its central axis, with the central axis coinciding with the optical axis; and • a first mechanical abutment fixing the longitudinal position of the complementary optical ferule once connected inside the holding sleeve; characterized in that the optoelectronic module also comprises: - at least one blade comprising a clear opening, the blade being fixed flexibly to the main electronic board and/or the housing between a bent unlocking position in which the clear opening allows passage both of the complementary optical ferule and at least a part of the body of the optical contact element, in which the complementary optical ferule is housed, such that the complementary optical ferule can be pushed and guided in the holding sleeve and a non-bent locking position in which the blade forms a second mechanical abutment and thus locks the body of the optical contact element inside the housing with the complementary optical ferule inside the holding sleeve. - a housing inside which are fixedly housed: • the main electronic board; • at least one optical subassembly, OSA, comprising: • at least one optoelectronic component, adapted to transmit or receive a light signal by its top surface along an optical axis, • at least one holding sleeve adapted to hold, with centring within it, a complementary optical ferule incorporated in an optical contact element extending about its central axis, with the central axis coinciding with the optical axis; and • a first mechanical abutment fixing the longitudinal position of the complementary optical ferule once connected inside the holding sleeve; characterized in that the optoelectronic module also comprises: • the main electronic board; • at least one optical subassembly, OSA, comprising: • at least one optoelectronic component, adapted to transmit or receive a light signal by its top surface along an optical axis, • at least one holding sleeve adapted to hold, with centring within it, a complementary optical ferule incorporated in an optical contact element extending about its central axis, with the central axis coinciding with the optical axis; and • a first mechanical abutment fixing the longitudinal position of the complementary optical ferule once connected inside the holding sleeve; characterized in that the optoelectronic module also comprises: - at least one blade comprising a clear opening, the blade being fixed flexibly to the main electronic board and/or the housing between a bent unlocking position in which the clear opening allows passage both of the complementary optical ferule and at least a part of the body of the optical contact element, in which the complementary optical ferule is housed, such that the complementary optical ferule can be pushed and guided in the holding sleeve and a non-bent locking position in which the blade forms a second mechanical abutment and thus locks the body of the optical contact element inside the housing with the complementary optical ferule inside the holding sleeve.