Surface mount box are an integral part of the horizontal subsystems of SCS and are intended for connection of terminal equipment in workplaces. Structurally, the sockets can be made in two versions: as a complete solution with soldered RJ45 ports and IDC connectors and in the form of a plastic casing into which Keystone plug-in modules are separately installed. The advantage of simple, empty enclosures is that not only RJ45 modules can be installed there, but also any others compatible with the Keystone format, incl. Telephone, optical and coaxial, in any desired configuration.