USAGE: Wenter RJ45 Coupler extender is ideal for extending Ethernet connection by connecting 2 short network cables together. Ethernet Extension Cable Interference-prevent, No delay, Plug and Play SAFE And SECURE: With nickel plated contacts and easy snap-in retaining clip, the coupler ensure a secure and corrosion free connection. COMPATIBILITY: This 8P8C female to female Ethernet coupler jack is compatible with Cat7, Cat6 Cat5e, Cat5 network. RJ45 inline jack coupler meets Category 6 performance in compliance with the TIA/EIA 568-C.2 standard. It is RoHS compliant.