In data centers and server rooms, the cabinets are usually arranged side by side in a row. Joining connectors ensure a stable position and prevent the cabinets from sliding. To secure the respective network cabinets, the side walls of the adjacent sides must be removed so that the cabinets can stand next to each other frame to frame. The joining connectors are then screwed from the inside to the vertical frame struts of the network or server cabinets, allowing two or more cabinets to form a single unit. The connecting elements are made of steel and are subsequently galvanized for optimal rust protection. The set of 4 joining connectors, including fastening materials, is suitable for the DIGITUS cabinets from the Unique Series and the Dynamic Basic Series.