WEme Multi-in-1 OTG Adapter SD Card Reader Micro USB Hub Dock with Cable for On-The-Go Samsung Galaxy Note Google Nexus Dell Asus Smartphones Tablets PC Compact portable and multi-function design. Fully supports most OTG protocol mobile phone or tablet PC interface USB2.0 Micro B Unique OTG allows your smartphone and tablet to act as a host for other USB devices like keyboards, mice, digital camera, USB flash drive, external HDD and other USB devices Unique OTG allows your smartphone and tablet to act as a host for other USB devices like keyboards, mice, digital camera, USB flash drive, external HDD and other USB devices External power supply through Micro USB port only charge for external USB devices like the hard disk etc, can not charge for smartphone or tablet Built-in stand docking station is suitable for use smartphone or tablet to read memory card, play film, enjoy music, record video while transfer and play