Welcome to our store! Made of high-quality material for durability and stability. Stable performance, easy to install and use. After testing, the USB keyboard and U-disk work, and the mobile hard drive has external USB power. It can also be used for MIDs, UMPCs, and e-books with a micro USB interface for OTG transfer. This adapter cable has a switch that toggles between OTG mode or power mode. Features: Made of high-quality material for durability and stability. Stable performance, easy to install and use. After testing, the USB keyboard and U-disk work, and the mobile hard drive has external USB power. It can also be used for MIDs, UMPCs, and e-books with a micro USB interface for OTG transfer. This adapter cable has a switch that toggles between OTG mode or power mode. Specifications: Color: Black Material: ABS Package List: 1 * Charging Host Cable Note: Note: Only one of the OTG and power supply functions can be used. They cannot be used simultaneously. (Currently, all OTG cables cannot charge mobile phones or tablets, only power external devices) If you receive your item and find any product problems, such as damage or incorrect quantity, please contact us immediately. We will do our best to provide you with satisfactory customer service.