Highlights: The standard USB 2.0 plug (type A) and micro USB plug (type B) combination, making this card reader compatible with all tablets and Android smartphones that support OTG function. (NOTICE: The card reader is not compatible with iPhone or iPad) USB 2.0 SD/micro SD card reader for data transmission, manage all your data from/to/on devices and across multiple platforms(Create, copy, edit, move, delete, rename, Open in, and many more). Connect to any mobile device that support USB On-The-Go (USB OTG). Please contact us if you don't know whether your phone have OTG function. we will help you. Powers via micro USB/USB port, no additional power supply needed. Easy to take, use and install, no additional software installation required. Playback videos/music directly from external memory without occupying space on Device. Package contents: An SD/TF Card Reader. All products sold by Werleo have hassle-free 18-month warranty Features: Read almost all your memory cards with speed and convenience. Excellent quality. Made of durable, high-grade plastics and premium chips. Memory Card Reader with OTG(Android phone/Tablet must with OTG function) Backup your important Photos, Music, Videos, and Contact list Portable for business (convenient for file work) Document viewer for all major file formats Securely store and share digital contents such as movies, pictures, and music from your phone Compatitable for: All the android phones/tablets with OTG function All laptops/PCs with USB A Port Supports: SDHC (UHS-I), SDXC (UHS-I), micro SD, micro SDHC (UHS-I), and micro SDXC (UHS-I) System requirements: Windows XP/7/8/ 8.1 /10/Vista/Linux Mac OS X v 10.3. 9 or later Available USB port or micro USB port Precaution Notice: Android Smartphones/Tablet do not download app, but need otg function. Please do not disconnect card reader during file transfer. Please do not connect both side of card reader at the same time. Please do not use card reader as cable. Please insert your memory card into the device before connect to your Cellphone or Tablet. If your phone case is thick, please take it off before using the device.