SHARKK Aluminum USB 3.0 to RJ45 Gigabit Ethernet Adapter Supporting 10/100/1000 Mbps Ethernet Add Ethernet support to your device. Ethernet 10/100/1000 (Gigabit) compatible. Solid yet lightweight, modern design with aluminum frame. Perfect for travel. Bring out the full functionality of your MacBook Air, ultra-portable laptop, or other Ethernet port-less device. RJ45 Ethernet port