Add 2x USB 3.0 and 4x USB 2.0 ports to your Laptop or Ultrabookexternally through a single USB 3.0 connection. Compatible with Samsung Chromebook XE303C12 and Lenovo Carbon X1. USB Hub ideal for Ultrabook and MacBook users with limited USB ports. Add high speed USB 3.0 ports to your Laptop Smartphone or Tablet Charging. Connect external hard drives in the home or office.