Working States‎:‎For most Android modelsSupport Galaxy S2‎,‎ Samsung Galaxy Note‎,‎ Samsung Galaxy S3/S4/S5‎,‎ GALAXY Tab3 8.0‎,‎ Sony Xperia NX‎-02D‎,‎ Sony Xperia acro HDIS12S‎,‎ Toshiba REGZA Phone‎-T01D‎,‎ and Sony S‎-series Tablet‎.‎ Other models‎.‎OTG USB HUB data exchange or charging modeUSB interface can be connected to the U disk‎,‎ mouse‎,‎ keyboard‎,‎ gamepad‎,‎ printers and other USB devices simultaneously‎.‎ When the switch is in “Charge”‎,‎achieved through an external power supply to charge the phone function‎.‎ When the switch is placed” OTG “‎,‎ the phone can read three external USB devices simultaneously‎.‎Charging mode and data exchange mode can work simultaneously‎.‎Features‎:‎Compatible with all tablets and cellphones with OTG function‎,‎ such as Samsung Galaxy S3，S4，Tab 3‎,‎2 ‎,‎Note 10.1 and so on‎.‎Three ports with USB design can connect the keyboard‎,‎mouse‎,‎card reader‎,‎and so on‎(‎can‎'‎t connect hard disk‎)‎‎.‎One power USB port can connect charger to supply power for flash disk‎,‎ card reader‎,‎ mouse‎,‎ keyboard and so on‎.‎When OTG mode and charging mode can work simultaneously‎,‎ the swith should be placed to‎"‎Charge‎"‎‎.‎It‎'‎s really portable and practical‎.‎ It can greatly save your working space and you can easily take it to everywhere‎.‎