USB Over RJ45 Ethernet LAN Cat5e/6 Cable Extension Extender Adapter Set. Plug the male USB adapter into your computer, and the female USB adapter into the USB cable on your peripheral device. Use a patch cable (Cat-5, 5e, or 6) to connect the two adapters together.USB 3.0 to Gigabit Ethernet Adapter is specifically designed to provide network capabilities to older computers or new thin notebooks without an Ethernet port. Instantly add network connectivity to a computer with USB 3.0 for extremely fast file transfers or streaming downloads. Wired connections provide faster data transfers and better security than a Wi-Fi connection.