Panel Mount Cat5e In-Line Couplers accept Two (2) Cat 5e Cables and Expand the Length while Maintaining the Cat 5e Standards. Meet the EIA/TIA 568 A & B and TSB40A Standards and are UL Listed. Contain an 8-Conductor RJ45 Jack on Each Side. These inserts can snap into Keystone/Quick Port Plates and they are Compatible with Leviton, ICC, Allen Tel and Many Others