These patch panels are fully preloaded and will mount on any standard 19" TIA/EIA compliant equipment rack. The Panels are connected using the standard 110 punchdown type terminals and accommodate T568A & T568B wiring configurations. The ports (RJ45 modular jacks) are also compatible with RJ11 / RJ12 plugs for applications where both voice and data are run into the same box or location.