9
Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, also through means of electronics; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, disc-shaped data carriers; data processing equipment and computers
11
Apparatus and instruments for lighting, including lamps; apparatus for cooling and cooling-systems, including through water-cooling; apparatus for ventilating, including ventilators for modification of computers (case-modding)
37
Building, installation, repair and maintenance of computers; rebuilding and modification of the outward and the technical components of computers, also called case-modding