These pocket-sized multi-adapters allow you to add additional USB peripherals and a Gigabit LAN through your USB port USB 3.0 Gigabit Ethernet port with transfer rates of up to 5 Gbps enable bulky file backup USB 3.0 plug-and-play and backwards compatible with USB 2.0 and 1.1 USB 3.0 SuperSpeed and bus powered Compatible with Windows and macOS The JUH470 USB 3.0 Gigabit Ethernet & 3-Port HUB provides extra connectivity from your computer with 5 Gbps transfer speed. These pocket-sized multi-adapters allow you to add additional USB peripherals and a Gigabit LAN through your USB port. With this Gigabit HUB adapter, you can add networking capabilities to a computer without them through a Wireless LAN connection. It has an RJ-45 connector that supports 10/100/1000 Mbps Ethernet performance and is perfect for your Ultrabook or MacBook. This adapter is a simple, fast and portable alternative solution serving multiple needs at once.