The JUE125 is a quick and easy way to add an Ethernet port to any Mac, Windows or Linux computer via a simple Usb port. These adapters are perfect if you don't have an Ethernet port or if you just want to increase your connection speed. The JUE125 is the ultimate solution for home and business users in need of high performance networking. The elegantly designed adapter uses an Rj-45 connector that supports 10/100 Mbps performance.