Main Purpose This ethernet switch, Allows a laptop to access Ethernet in different rooms, without having to pull the cable from another room to the room to connect to this computer. Built-in Conduction RJ45 1 male to 3 female coupler, The 78mm board has a built-in line circuit to prevent damage to the conductor. Gold Plated Core This RJ45 1 to 3 Ethernet LAN network cable use 8-pin gold plated core to ensure signal transmission. Convenient and Practical This RJ45 Ethernet splitter, The PCB board was built-in conduction circuit to prevent damage to the conductor. Three network cables can be connected to a longer cable through this splitter. Features: Material: ABS in black color Adapter Size: 9 3.1 2.4 cm / 3.54 1.2 1.43 in (approx.) Cable Length: 24 cm / 9.45 in (approx.) rj45 splitter Warm Tips: The signal can only enter one of the ports. 1. Using 8-pin gold-plated core to ensure signal transmission. 2. The PCB board was built-in control circuit to prevent damage to the conductor. 3. It can shield the interference of external electromagnetic signal to prevent damage to the internet signal. 4. Three network cables can be connected to a longer cable through this splitter. 5. Allows a laptop to access Ethernet in different rooms, without having to run the cable from another room into the room to connect to this computer 6. Run one Ethernet cable from the wall to the splitter cable, one from the splitter to one computer (or laptop, and one from the splitter to another computer (or laptop). Connector Type RJ45 Jack Splitter Cable High Quality RJ45 Splitter Using 8-pin gold-plated core to ensure signal transmission.