Black Cat 6 In-Line Keystone Coupler Jack 25 Pack Allows for connection of two (2) Cat 6 patch cords Feed through in-line coupler Component-rated PCB technology provides maximum performance and superior signal quality Enhanced crosstalk cancellation reduces return loss and improves performance by rejecting noise and unwanted signals Exceeds ANSI/TIA/EIA-568-B.2 Category 5e connecting hardware requirements Reduced rear footprint allows for greater connectivity density and provides for more port configurations in a smaller area Backwards compatible to all lower rated category components Compatible with all faceplates, inserts, surface mount boxes, and blank patch panels Compatible with all furniture faceplates, bezels, and surface mount boxes For use with Category 6 patch cords Installation instructions included UL listed