1、This is a multi‑functional USB OTG host hub adapter cable. 2、Three ports with USB design can connect the keyboard, mouse, card reader and so on (can't connect hard disk). 3、One power USB port can connect original charger to supply power for flash disk, card reader, mouse, keyboard and so on. 4、When OTG mode and charging mode can work simultaneously, the switch should be placed to Charge. 5、Portable and practical, which can greatly save your working space and you can easily take it to everywhere. Features: 1. 100% brand new and high quality! 2. This is a multi-functional USB OTG host hub adapter cable. 3. Three ports with USB design can connect the keyboard, mouse, card reader and so on (can't connect hard disk). 4. One power USB port can connect original charger to supply power for flash disk, card reader, mouse, keyboard and so on. 5. When OTG mode and charging mode can work simultaneously, the switch should be placed to Charge. 6. Portable and practical, which can greatly save your working space and you can easily take it to everywhere. Working States: OTG USB HUB data exchange or charging mode. USB interface can be connected to the U disk, mouse, keyboard, game pad, printers and other USB devices simultaneously.   Package include: 1 x 4 Port Micro USB Power Charging OTG Hub Cable Note: 1.Supports supply extra power through micro USB port if necessary. (Extra power only charge for accessories such as mouse keyboard etc,can not charge for smartphone or tablet). 2.Support for Samsung Galaxy S2/ Galaxy Note/ Galaxy S3/ S4/ S5/ Galazy Tab 38.0, for SONY Xperia NX-02D/ Sony Xperia acro HDIS 12S, for Toshiba REGZA Phone-101D, for SONY S-senes Tablet, other Andoid models. 3.USB 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 and external power supply to charging the phone function. When the switch is placed OTG, the phone can read three external USB devices simultaneously. 4.Support for Samsung Galaxy S4/ Galaxy Note3, for Thinkpad 8 achieve OTG mode, charging mode simultaneously, switch should be placed CHARGE.