Ugreen USB-A Male To Ethernet Adaptor + 3 Ports Support Max 1000Mbps This LAN network adapter offers full 10/100/1000 Mbps Fast Ethernet performance over USB 3.0 and Ethernet ports, faster and more reliable than most wireless connections. 3-Port USB 3.0 hub rate up to 5Gbps This USB hub Ethernet adapter Simply helps you to connect up to 3 USB A devices to your PC or laptop, such as external hard Drive, USB Flash Drive, mouse, keyboard, USB headphone, speakers, USB webcam etc. Extra Power Supply Dc-jack designed for power supply to this product when connecting USB HDD. Please kindly note: This product only works with DC 5V (center positive Polarity) adapter for power supply.