Features: and high quality. This is a multifunctional USB OTG Hub Adapter Cable. Compatible with all tablets and cellphones with OTG function, such as for Galaxy S3, S4, for Tab 3,2 ,for 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 original 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". You can share your U disk content while charging the phone. -USB Power can charge your and smart phone simultaneously It's really portable and practical. It can greatly save your working space and you can easily take it to everywhere. Working States: 1. For most Android models Support for Galaxy S2, for Galaxy Note, for Galaxy S3/S4/S5, for GALAXY Tab3 8.0, NX-02D, HDIS12S, for REGZA Phone-T01D, and S-series . Other models. 2. OTG USB HUB data exchange or charging mode 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 an external power supply to charge the phone function. When the switch is placed "OTG", the phone can read three external USB devices simultaneously. 3. Charging mode and data exchange mode can work simultaneously It works only for some models of for , as for Galaxy S4, for Galaxy Note3, for 8. When it is in this case, you must place the switch to "Charge". Material:plastic colour: black Package Contents: 2 x 4 Port -USB Power Charging OTG Hub Cable Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.