GOOQ USB Card Reader - USB 3.0 and Micro-USB 2.0 OTG Supported Include SD and Micro SD Card Slots for SDXC, UHS-I SD, SDHC, SD, Micro SDXC, Micro SDHC, Micro SD, MMC Memory Cards and for Android USB OTG Enabled Smartphone Tablet, Laptop, Computer Etc (USB 3.0 + OTG) Multifunctional 2in1 USB 3.0 + Micro-USB OTG Card Reader with SD Card and Micro-SD Card slot. Connects to your mobile devices that support USB On-The-GO (USB OTG) ;SuperSpeed USB 3.0 interface; backwards compatible with USB 2.0 Double card slots support SDHC UHS-I, SDXC UHS-I, micro SD, micro SDHC UHS-I, microSDXC UHS-I, SD, SDHC, SDXC, micro SD, micro SDHC, and microSDXC System Requirements: Windows 2000/ME/XP/Vista/7/8(32bit/64bit) and MAC OS 10.X or above version. Please check whether your mobile phone or tablet support the OTG function before you are buying.