With this Micro USB hub, you can use your phone with keyboard to make work more conveniently and you can also check pics taken by camera directly on your phone and share with others. Feature: TF/SD Card Reader It easily solves the problem of no card slot for micro USB devices.  Multiple Interfaces With USB interface, SD and TF card slot, you can use one extra USB device and read SD/TF card easily and not need to plug and pull repeatedly. Share More Easily You can check pics taken by camera on your phone and post them on social apps to share with others. Work & Play More Conveniently With USB interface, you can connect your phone with keyboard or gamepad, etc. Portable Design It is small and light, not taking up much space of your backpack. You can take it with you anywhere. Plug and Play No drivers required. Easy to use. Note: There is only one 3-in-1 micro USB adapter in the package. Specification: Interfaces: Micro USB male, USB2.0, SD/TF card slot Material: ABS Cable length: 6.5cm Item weight: 15.3g/ 0.54oz Package size: 19.8* 6.8* 1.6cm/ 7.8* 2.68* 0.63in Package weight: 32.4g/ 1.14oz Packing list: 1 * 3-in-1 Micro USB Hub