Rj45 Coupler 5-Pack Is Ideal For It Professionals Managing Multiple Setups; T568B Configuration Enables Seamless Connection Of Two Cat 6 Ethernet Cables - Supports 1/2.5/5/10G And 10/100 Networks; Insertion Loss Margin Of 35.4Db W/17.5Db Headroom Tia-568-C.2 Compliant; Backward Compatible W/Cat5/5E - Compliant Standards: 10Base-T/100Base-Tx/100Base-T4/1000Base-T; 2.5Gbase-T/5Gbase-T; Atm-25/Atm-51/Atm-155; Tr-16 Active/Passive; Tr-4; 100Vg-Anylan - Single Sku Available (In-Cat6-Coupler-U1)