Multifunctional SD card reader: thanks to the combination of standard USB 2.0 port and micro USB port, this card reader is compatible with Android smartphones and tablets with micro USB charging port that support OTG function, and also works on computers with USB port. [NOTE: The card reader is not compatible with iPhone or iPad] Work on the computer: USB 2.0 SD/Micro SD card reader for data transfer, manage all your data from/to/to devices and across multiple platforms. The card reader can be used on computers with Windows, MacOS and ChromeOS systems. Work on Android smartphone/tablet: Connect an Android smartphone or tablet with micro USB interface that supports USB OTG (for on the go). Play videos/music directly from external storage without taking up space on the device. Portable, plug in and use: supports via micro USB/USB port, no additional power supply required. Easy to take, use and install, no additional software installation required. Thanks to the mini size, you can take it anywhere in your bag and bag. Box contents: an SD card reader (does not contain SD or Micro SD). All products come with a hassle free 18 month warranty. Please feel free to contact us if you have any problems with it.