Rocketek USB C OTG SD Card Reader up to 250MB/s for SDXC, SDHC, SD, Micro SDXC, Micro SD, Micro SDHC Card and UHS-II, Compatible with 2018 MacBook Air, Galaxy S9 Note9,More-Read 2 Cards Simultaneously Universal Support: Rocketek USB C Memory card reader support for laptops, smartphones and tablets with OTG function. Read 2 Cards Simultaneously: Read 2 cards at the same time, Support SD, SDHC, SDXC, Micro SD, Micro SDHC (UHS-I), Micro SDXC (UHS-I). Compact & Slim: Aluminum design small enough for fieldwork. High-speed transmission allows you to transfer HD movies or files in just seconds. Universal Compatibility: Compatible with Samsung S9/S8, Macbook 2017/2016, Macbook Pro, Google Chromebook Pixel, Huawei Matebook and other device with OTG function. PLUG & PLAY: No installation software or drives required and not extra power. LED indicator easily see whether it is working or not.