Features: RJ45 to RJ11 adapter, one point four network port to telephone port, suitable for telephone exchange Solve the worries of the network cable to telephone line RJ45 to RJ11 adapter, one point four network port to phone port, only used for electricity Telephone exchange network cable to telephone use, the crystal head uses excellent Stable signal, simple to use, straighten the line, plug and play, Avoid complicated lines. Note: This product can't connect several computers to the Internet at the same time Specifications: Color:As picture Quantity:1PC Size:5.6*2.1*3.2cm Package Include:1PC RJ45 To RJ11 Network Cable Splitter 1.Please allow 0.1-0.3cm differences due to manual measurement, thanks. 2.Please understand because of the light irradiation or computer display difference, so I can't guarantee photos and real color is 100% the same.