Antopos (TM) USB 2.0 High Speed Portable Premium Aluminum 4 Port USB Hub for iMac, MacBook, MacBook Pro, MacBook Air, Mac Mini, PCs or Laptops (Silver) Plug-and-play design, hot-plugging; driver free Ultra slim design - Occupies minimal space on your desk Adds 4 USB 2.0 ports to your computer - Up to 480 Mbps data transfer rate Shielded Cable makes a safe and efficient data transfer for maximum performance and longtime usage Expands 1 USB port into 4Allowing connection of multiple USB devices, for Mac Pro, iMac, MacBook Air, MacBook Pro, MacBook, and Mac mini