Sageworkz USB 3.0 Hub with Ethernet Adapter. Sleek Aluminum Design Perfect for Macs and PCs. 3 USB 3.0 Superspeed Ports. 10/100/1000 Gigabit RJ45 Network Adapter Beautiful Brushed Aluminum will look great next to your MacBook or UltraBook. Gigabit Ethernet Adapter is much faster and more reliable than WiFi. Great for watching Netflix or downloading large files. 3 SuperSpeed USB 3.0 ports (5Gbps) are 10 times faster than the less expensive USB 2.0 Powered by USB connection from your computer. Optionally, a 5 volt 4 Amp AC Adapter (Not included) can be used to power hub directly. Works with Mac OS X and Windows XP, Vista, 7, 8, 8.1 and Windows 10.