Add four external USB 3.0 ports to your notebook or Ultrabook with a slim portable hub Compatible with MacBook Pro MacBook Air Portable 4 Port USB 3.0 Hub Compact USB Hub with Cable USB 3.0 Hub w Attached Cable Mobile USB 3.0 Travel Hub - Ideal for Ultrabook and Laptop users with limited USB 3.0 ports. Laptop accessory adding high speed USB 3.0 ports. Connect peripherals and external hard drives or flash drives in the home or office. Buil-tin cable.