This 4-port USB 3.0 hub turns a single USB port on your laptop into four USB-A ports and features a compact, USB-powered design that makes it perfect for travel. For devices that demand extra power, the hub also comes with an external power adapter. Add USB ports, virtually anywhere you go With its compact and lightweight design, this 4-port USB hub is tailored for mobility. You can easily tuck it into your laptop bag when traveling, which makes it easy to expand your connection options almost anywhere you need to. It's perfect for connecting common USB devices such as a mouse, keyboard, or flash drive, right when you need them. You can install the versatile USB 3.0 hub virtually anywhere, because it takes up minimal space on a desk, and fits perfectly in hot-desk or BYOD environments. Provide more power when needed This self-powered USB hub comes with an external power adapter to support power-hungry USB devices, such as larger external drives and enclosures, which require more power than USB power can provide on its own. With the power adapter, you can also charge your smartphone on one of the available ports. Each USB-A port supports USB Battery Charging Specification 1.2. It's recommended to only charge one device at a time. Universally supported, for easy installation This USB 3.0 hub will work with a wide range of computers because it requires no additional software or drivers. It installs automatically when you connect it to your laptop or desktop, so you can be up and running quickly. It also works with a range of operating systems such as Windows®, macOS, Linux® and Chrome OS™, so it's multi-platform compatible. The ST4300MINI is backed by a StarTech.com 2-year warranty and free lifetime technical support.