Detail: 4-Port At Same Time-The Small And Speedy USB Multi Port Adapter Can Easily Expand One Of Your Computers USB Ports Into Four USB 3.0 Ports To I Mac, Mac Book, Mac Pro / Mini, Surface Pro, XPS, Notebook PC, Mobile HDD, And More. Just Plug And Play, You Don't Need A Driver And It's Easy To Use. That's Fine For Keyboards, Mice, And Memory Sticks.(Does Not Support Charging For Phone Or Other Device!).