Sabrent Premium 4 Port Aluminum USB 3.0 Hub for iMac, MacBook, MacBook Pro, MacBook Air, Mac Mini, or any PC (HB-MCS4) Sleek Apple-style design ideal For Mac Pro, iMac, MacBook Air, MacBook Pro, MacBook, and Mac mini Adds 4 unpowered USB 3.0 ports to your computer - Up to 5Gbps data transfer rate Easy to set up, Plug-n-Play, Hot swappable, Hot pluggable Compatible with all Windows/Mac/Linux systems.