Connects up to 2 additional universal serial bus devices (eg universal serial bus memory stick external hard drive) to a universal serial bus 30 portSuper-speed data transmission of up to 5 gigabitssecond large distance between sockets makes it easy to plug in wide universal serial bus plugsdongles light-emitting diode function display informs about the device statusIntegrated universal serial bus cable for connection to personal computernotebook very compact so easy to carry with your notebookSuitable and tested for universal serial bus 30 but will also work with universal serial bus 20 devices universal serial bus 30 is up to 10x improved than universal serial bus 20 operating system Windows XP SP3Vista78 and Mac OS 108Scope of delivery Hama Universal serial bus 30 Hub 12 "mobile" 1 user manualBox Contains1 2in1 USB 20 OTG card readerOperating instructions