Specifications: 1. Brand: USAMS 2. Type: Micro USB to USB 3. Output current: 2.1 Max 4. Transmission speed: 480Mbps. 5. Color: White, Gold, Rose-gold. Features: 1. Without computer, just connect to the U disk, Card reader,MP3,Keyboard, digital camera,ect external device, transmit data. 2. Made of aluminium alloy, antioxidant, strong and durable. 3. USB2.0, output 2.1A current max, and support 480Mbps data transmission . 4. Compatable with: Samsung,Xiaomi,MEIZU,ect Micro USB port. (The phones which support Micro USB port can use this OTG adapter) Package includes: 1* USAMS Micro USB to USB OTG