Fivetech USB 3.0 to 10/100/1000 Gigabit RJ45 Ethernet LAN Network Adapter 1000Mbps (USB3.0 -RJ45) Compatible with Mac OS X 10.6+, Windows 8 / 7 / Vista / XP, Linux Connectors: USB 3.0 Male, RJ-45 Female USB 3.0 interface; backwards compatible with USB 2.0 1000 Mbps Gigabit Ethernet; backwards compatible with 100/10 Mbps No drivers needed on Mac OS 10.6+ or Linux Built in drivers for Windows, no CD needed Compliant with IEEE 802.3, 802.3ab, 802.3u Data rate auto-negotiation Crossover detection Connect a computer to a LAN at maximum speed with this USB 3.0 Gigabit LAN adapter. It has all the speed of an internal card, but adds the convenience and portability of a USB device.