Welcome to the store! 2-in-1 Dual Functionality: Three USB 3.0 ports and a 10/100/1000M Gigabit Ethernet adapter. Fast and Stable: These USB 3.0 ports increase data transfer speed up to 5Gbps (or 10 times faster than USB 2.0). Gigabit Ethernet achieves 1000Mbps operation, providing a faster and more stable connection than Wi-Fi. Smart and Energy Efficient: Fully supports crossover detection, automatic correction, Wake-on-LAN power management, and remote wake-up. Supports full-duplex operation with IEEE 802.3x flow control and half-duplex operation with backpressure flow control. Comprehensive Compatibility: Compatible with USB3.0, 2.0, and 1.1 specifications; supports Windows 8/7/Vista/XP and Mac OS X 10.8 and higher. Ideal portable replacement network adapter or laptop accessory. Suitable for Chromebook, Macbook Air, Windows, Android Tablets. Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!