UL Listed 25-Pack RJ45 CAT6 Keystone Coupler Female to Female Insert Coupler, UTP CAT6 Keystone Inline Coupler WhiteAbout this itemSAFER TO USE - VCE ethernet keystone coupler is UL Listed (E521847) and flame retardant (UL 94V-0), making them safer and more durable for use at home, in the office, in the computer room, etc.SLIMMER DESIGN - The RJ45 couplers are slimmer than traditional ones. Great for fitting side by side into multi-port wall plates or patch panels with standard keystone ports.CATEGORY 6 PERFORMANCE - Support cat6/cat5e/cat5 ethernet cables. It is also compatible with T568B and T568A standards and can be used with PoE devices.STABLE TRANSMISSION - Gold plated pure copper contact and flame-retardant ABS housing ensure 1000 Mbps ethernet gigabit speed without signal loss.TOOLLESS CABLE EXTENDER - The keystone inline coupler is easier to extend an ethernet connection by connecting 2 male network cables without a tool. Help you avoid the embarrassment that the network cable is not long enough.