?What You Get?4-Port USB2.0 Portable Data Hub with 11.8'' Extension Cable, our 18-month friendly customer service, If you meet any issues while you use this USB 2.0 hub, you can get a brand new replacement for free. ?Compact Design? Lightweight design is convenient for people to place and carry, suitable for work and travel. ?Protect External Devices? the USB hub build in smart chip, overload voltage and instaneous current protection fuction to protect the safety of connected equipment and ensures no interference with bluetooth and wifi. ?Super Speed Data Hub?It can reach 480 Mbps data transmission speed, so that you can transfer files and videos at a faster speed. ?Great Compatibility?The 4 port USB hub is plug & play, hot swappable, no drive or CD required, compatible with iMac, MacBook, Mac Pro/ Mini, surface Pro, XPS, notebook PC, mobile HDD and more.