RJ45 Coupler Usage: This extender is ideal for extending ethernet connection by connecting 2 short network cables together. Plug and play, no drivers are required. High Speed Data Transfer. Safe and Secure: With nickel plated contacts and easy snap-in retaining clip, the coupler ensure a secure and corrosion free connection. RJ45 inline jack coupler meets Category 6 performance, compatible with TIA/EIA 568-C.2 standard and RoHS certification. Female to Female Ethernet coupler jack is compatible with Cat7, Cat6, Cat5e, Cat5 network.