Liberty's CP8DZ00A keystone compliant Cat 6a shielded coupler is an excellent alternative to a compliant punch down jack. In?line couplers do add an extra loss point to the link but their speed and efficiency for patching often outweighs the requirement as dictated by the ANSI standard. This unit is an in?line coupler format, jack to jack. It can be used for any shielded RJ-45 need, Cat 5e up to 10G Cat 6a. This fits any keystone compliant port on a plate or panel. This unit features a 750 mating minimum lifecycle and 50 µin. gold-plating on the contacts.