The GB106 and GB107 are complete assemblies for mounting on walls or other vertical surfaces. The GB106 mounts a data system cable connector. The GB107 mounts a data connector as well as a 3 or 4-pair modular telephone jack. The GB106 Box is supplied with a GB103 Type 1 face plate; the GB107 Box is supplied with a GB104 Type 2 face plate. A magnetic back plate allows units to be mounted on metal desks or walls. Suitable screw holes are provided for other types of mounting as well as knockouts on the 4-sides and rear. A neoprene gasket and plastic strap are provided to secure the incoming cable. The GB108 Surface Mounting Box is furnished complete with all hardware LESS FACE PLATE.