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 port Offers three USB 3.0 ports for connecting multiple USB peripheral devices such as flash drive, hard drive, keyboard, mouse and more USB 3.0 ports provide super fast data transmission speed of up to 5Gbps, easily upload or download files, music, photos in several seconds The RJ45 port can recognize your internet speed and automatically adjusts to the highest level, no matter it is 10 or 100 or 1000 Mbps. Perfect for laptops without Ethernet socket when the wireless network fails Wide Compatibility, supports for Windows 11 or 10 or 8.1 or 8 or 7 or XP or 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 3.0 Output: 3xUSB 3.0andRJ45and5V Power Port USB 3.0 transfer rate: 5Gbps Network: 10 or 100 or 1000Mbps Power supply interface: Type-C female Power supply: DC 5V or 2A System: for Windows, for Mac OS, for Linux