1.This RJ45 adapter allows you connect two computers.Built-in thick PCB motherboard is durable. Ensure signal transmission security. | Input and output interface: RJ45 eight-core standard jack. The adapter splits the original embedded Ethernet cable (8 pins) into two groups. | RJ45 Ethernet splitter can divide a network cable into two outputs, the speed of the cable group only reach 100 megabytes. | By using this version of the dual RJ45 adapter, it is possible to interconnect two devices. But does not support two computers accessing the Internet at the same time. feel free to enjoy your internet surfing. | Dimension : 4cm x 3.5cm x 2.1cm，Metal Shield: Shielding disturb of electromagnetic, to prevent loss or damage the network signals. Meets Cat 5 / Cat 5e / Cat 6 / Cat 7 /Cat 8 performance requirement.