j5create's USB 2.0 Ethernet Adapter JUE120/JUE125 is a quick and easy way to add an Ethernet port to any Mac/Windows/Linux computer via a simple USB port. The JUE120/JUE125 is perfect if you don't have an Ethernet port or if you just want to increase your speed. The JUE120/JUE125 is the ultimate solution for home and business users in need of high performance networking. The elegantly designed JUE120/JUE125 uses an RJ-45 connector that supports 10/100 Mbps performance. The JUE125 is officially hardware certified by Microsoft Windows 8.1 RT, because it does not require driver installation on any Windows 8.1 RT platform.