?Package Contents & Warranty? An SD card reader with "Vanja" logo (NOT include Cards, U disk and other props). All products sold by Vanja have hassle-free 18-month warranty. ?Safe & Durable Design?With durable Alu-alloy case, Vanja memory card reader offers better heat dissipation. The built-in smart chip avoids overcurrent, overvoltage, short circuit and overheat. Withstands being used time and time again, for years of reliable data transfer with Vanja micro SD card reader. ?Plug & Play Easy to Use?Support on all OTG device. No additional power supply needed, no extra driver needed, plug into the USB port, playback videos/music directly from external memory without occupying space on Device. Share video or picture to your families or friends in anytime anywhere. (NOTICE: The Card Reader is NOT compatible with iPhone or iPad). Compatible with Windows 11,10, 8, 7, Vista, XP, Mac OSx 10.6-10.12, Linux 2.6.14 or later. ?Simultaneous Reading 2 Cards? This micro SD card reader is able to read and write 2 SD/TF cards at the same time to free your hands; The SD card adapter is compatible with SD, SDXC, SDHC, MMC, RS-MMC, Micro TF, Micro SD, Micro SDXC, Micro SDHC and UHS-I memory cards up to 2TB storage capacity. ?USB 3.0 High-Speed Transmission? USB 3.0 SD card adapter transfer data up to 5Gbps, 10X faster than USB 2.0. Backward compatible with USB 2.0, 1.1. USB 2.0 memory 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 so on).