Cable Matters [UL Listed] 10-Pack Ethernet Coupler (RJ45 Coupler / Cat5e Cat6 Coupler) in Black Heavy duty Cat6 RJ45 couplers extend the connection between two Ethernet patch cables Future-proof your network for 10-Gigabit Ethernet at a Cat5e price with this convenient and cost effective 10-pack inline couplers for Ethernet Gold plated contacts ensure a corrosion free connection This 8P8C female to female Ethernet coupler is backwards compatible with Cat5e network Cat6 coupler is UL Listed (E486099) meets Category 6 performance in compliance with the TIA/EIA 568-C.2 standard