Fangrui Product Details Description: New And High Quality. Using Plated Core To Signal Mission. The Pcb Was Built-in Conduction Circuit To Prevent Damage To The Conductor. Can Protect The Interference Of The External Electromagnetic Signal To Avoid Damaging The Internet Signal. Four Network Cables Can Be Connected To A Longer Cable Using This Splitter. Allows A Laptop To Access Ethernet In Different Rooms, Without Having To Pull The Cable From Another Room To The Room To Connect To That Computer. You Run An Ethernet Cord From The Wall To The Splitter Cable, One From The Splitter To A Computer (or Laptop, And One From The Splitter To Another Computer (or Laptop). Notes: This Ethernet Splitter Allows Four Computers To Share An Ethernet Line One At A Time, But It Does Not Support Four Computers To Simultaneously Connect To The Internet. Material: Abs Colour: Black Package Contents: 1 X Rj45 Lan Connector Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Caus