System line, such as a assembly line, production line and conveying line, comprising: - at least one supporting frame (2, 3) extending substantially in parallel with the feeding direction of the system; - at least one plurality of driving means supported by said supporting frames (2, 3); - at least one motor or at least a pneumatic device for driving at least one portion of said plurality of driving elements; - at least one drive assembly to transfer the motion from said motor to said at least one portion of the plurality of driving elements; - at least one control and power ASi system; - at least one main ASi-controller; - at least one secondary ASi-controller; said main ASi-controller communicating with said at least one secondary ASi-controller or with other ASi- main controllers through at least one ASi-interface cable; - said main Asi-controller comprising a main Asi-box; and - said secondary Asi-controller comprising a secondary Asi-box; - said main and secondary ASi-boxes having at least one first corresponding transversal coupling dimension; - said supporting frame (2,3) comprising a housing compartment extending in the feeding direction of the system line, adapted to house said main and secondary ASi-boxes; - said supporting frame (2, 3) comprising fastening means to removably block said at least one main box and said at least one secondary box inside the housing compartment; - said housing compartment comprising at least one housing seat for said at least one ASi-interface cable; - said housing seat is shaped so as to arrange the ASi-interface cable in such a position, with respect to said main and secondary boxes, that it is penetrated by piercing needles or knifes protruding from said main and secondary ASi-boxes in order to implement the electrical connection among said main and secondary ASi-controllers and said at least one ASi-interface cable; characterized by said fastening means comprising: - at least one contrast element positioned at least partially at a distance with respect to said main Asi-box and/or the secondary Asi-box greater than or equal to that of the perforating needles projecting from said main box and secondary; - at least one pressure element adapted to be removably positioned between said main Asi-box and/or the secondary ASi-box and said contrast element so that said main ASi box and/or secondary ASi boxe are kept in position against said at least one AS-interface cable; - said contrast element comprises at least one first rib transversally extending towards the inside of the supporting frame (2; 3) and in that said pressure element comprises at least one spacer shaped to be removably positioned between said first rib and said main and/or secondary ASi-boxes so that said main and/or secondary ASi-boxes are kept in position with respect to said at least one AS-interface cable. - at least one supporting frame (2, 3) extending substantially in parallel with the feeding direction of the system; - at least one plurality of driving means supported by said supporting frames (2, 3); - at least one motor or at least a pneumatic device for driving at least one portion of said plurality of driving elements; - at least one drive assembly to transfer the motion from said motor to said at least one portion of the plurality of driving elements; - at least one control and power ASi system; - at least one main ASi-controller; - at least one secondary ASi-controller; said main ASi-controller communicating with said at least one secondary ASi-controller or with other ASi- main controllers through at least one ASi-interface cable; - said main Asi-controller comprising a main Asi-box; and - said secondary Asi-controller comprising a secondary Asi-box; - said main and secondary ASi-boxes having at least one first corresponding transversal coupling dimension; - said supporting frame (2,3) comprising a housing compartment extending in the feeding direction of the system line, adapted to house said main and secondary ASi-boxes; - said supporting frame (2, 3) comprising fastening means to removably block said at least one main box and said at least one secondary box inside the housing compartment; - said housing compartment comprising at least one housing seat for said at least one ASi-interface cable; - said housing seat is shaped so as to arrange the ASi-interface cable in such a position, with respect to said main and secondary boxes, that it is penetrated by piercing needles or knifes protruding from said main and secondary ASi-boxes in order to implement the electrical connection among said main and secondary ASi-controllers and said at least one ASi-interface cable; - at least one contrast element positioned at least partially at a distance with respect to said main Asi-box and/or the secondary Asi-box greater than or equal to that of the perforating needles projecting from said main box and secondary; - at least one pressure element adapted to be removably positioned between said main Asi-box and/or the secondary ASi-box and said contrast element so that said main ASi box and/or secondary ASi boxe are kept in position against said at least one AS-interface cable; - said contrast element comprises at least one first rib transversally extending towards the inside of the supporting frame (2; 3) and in that said pressure element comprises at least one spacer shaped to be removably positioned between said first rib and said main and/or secondary ASi-boxes so that said main and/or secondary ASi-boxes are kept in position with respect to said at least one AS-interface cable.