Macally USB 3.0 to Gigabit Ethernet Network Adapter with SuperSpeed 3.0 to 10/100/1000 Mbps for Mac OS X, Windows PC, MacBook Pro/Air, Microsoft Surface, Chromebook, More (U3GBA) Quick, stable connection: Ethernet connection speeds at 10/100/1000Mbps Sleek aluminum design: the aluminum design provides a premium Look and protection. LAN activity and Ethernet speed LED indicator Compact design for maximum portability Supports USB 3.0 (5Gbps) and USB 2.0 (480 Mbps)