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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 supply power for flash disk, card reader ,mouse,keyboard,so on.
Power Support OTG charging mode simultaneously,Switch should be placed "Charger"
Micro-USB Power can Charge your Tablet and Smartphone Simultaneously!!!
USB interface can be connected to the U disk , mouse, keyboard and other USB devices simultaneously.
When power consumption is relatively large external USB device , you can connect an external power source via MICRO USB interface to achieve a number of large -power USB devices simultaneously
Compatible for all tablet and cell phone with OTG function,such as Samsung Galaxy S3,S4,Tab 3,2 ,Note 10.1.
1PC Black 4 Port Micro USB Power Charging OTG HUB Cable For Smartphone Table(Without retail package)