The hub instantly expands a 3-port USB 3.0 hub, 5V power port and RJ45 Gigabit Ethernet port, compatible for MacBook Air, for iMac, for iMac Pro, for Microsoft Surface Pro, for Intel Ultrabook, laptops with a USB A portOffers three USB 3.0 ports for connecting multiple USB peripheral devices such as flash drive, hard drive, keyboard, mouse and moreUSB 3.0 ports provide super fast data transmission speed of up to 5Gbps, easily upload or download files, music, photos in several secondsThe RJ45 port can recognize your internet speed and automatically adjusts to the highest level, no matter it is 10/100/1000 Mbps. Perfect for laptops without Ethernet socket when the wireless network failsWide Compatibility, supports for Windows 11/10/8.1/8/7/XP/Vista, for Mac OS and for Linux. The USB hub supports hot-swappable, plug-and-play functions. A built-in surge protective device will keep you and your device safe. (It can't be used directly for Fire TV Stick, you'll need a specially crafted OTG adapter with an isolated power cord.) Specification: Input: USB 3.0Output: 3*USB 3.0+RJ45+5V Power PortUSB 3.0 transfer rate: 5GbpsNetwork: 10/100/1000MbpsPower supply interface: Type-C femalePower supply: DC 5V/2ASystem: for Windows, for Mac OS, for Linux Package included: 1 x USB Hub 1 x English and Chinese User Manual Other things not included