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 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