The Targus USB Mobile Port Replicator with Ethernet PA090 is a portable docking station that allows users to easily expand their laptops' connectivity options. With a built-in Ethernet port (RJ-45), this device enables users to quickly and efficiently connect to a wired network for seamless internet access. The Targus brand is known for producing reliable and durable accessories, making this port replicator a trusted choice for those in need of additional connectivity on the go.