2 Year Warranty - We love our Plugable products, and hope you will too. All of our products are backed with a 2-year limited parts and labor warranty as well as Seattle-based email support. Note - USB splitter is bus powered, requires no additional AC power. This hub is intended for low or self powered devices. Not compatible with automotive USB ports. Portable - USB splitter for laptops is ultra compact and travel friendly featuring a built-in 12-inch USB extender cable. Multi usb port perfect for adding more devices (like a keyboard and mouse) to your limited ports. Compatibility - 2 port USB hub works with USB 3.0, 2.0 host controllers and devices on Windows, Mac, and Linux/Unix computers at USB 2.0 speeds. Transfer rates are device and USB host controller dependent. Fully plug and play, devices can be hot-plugged. Two Ports in One - This USB adapter has a clean and compact design. Standard USB hub splitter enables two devices to share a single available USB port with full USB 2.0 compatibility and performance.