These USB 3.0 ports elevate data transfer speeds up to 5Gbps (or 10 X faster than USB 2.0!); Gigabit Ethernet achieves 1000 Mbps operation, providing a faster, more stable connection than Wi-Fi. Perfectly support / /Vista/forwindows 7/8 and other higher systems. Feature - Color: Black - Material: plastic and metal - Size: 8.9 x 4.5 x 1.7cm - Transmission speed: 10/100/1000 Mbps - It is appliable to desktop, notebook, laptop, ultrabook and so on. - You need to install the driver before using and we have the CD driver to help you. - 3 super USB3.0 ports allows you to connect a variety of USB devices with your computer which makes your work more efficient. - 3 ports of USB3.0 external hub with a RJ45 gigabit -net LAN adapter can work at the same time. It is really practical , high-performance, safe and stable! - Perfectly support / /Vista/forwindows 7/8 and other higher systems Package list: 2 x usb ethernet adapter