【USB 3.0 + USB C】 Both interfaces support high-speed data transfer up to 5 Gbps. Compatible with SDXC, SDHC, SD, MMC, RS-MMC, Micro SDXC, Micro SD and Micro SDHC cards. Backwards compatible with USB 2.0 and USB 1.1. * Memory cards shown in images are not included in the product. | 【Double duty】 Simultaneously reading and writing on two cards to save the constant plugging and pulling of plugs. Enjoy fast photo downloads, smooth video editing and fast file transfers. Double your productivity with simultaneous microSD/SD card access. View recordings of your security cameras, wildlife monitors, private surveillance cameras and car monitors instead of bringing them home to you | 【Plug and Play】Designed to not block your other ports. Its slim profile makes it easy to store in your camera bag or backpack and provides convenient access to micro/SD cards when needed. No drivers are required for Windows 10/8/7/Vista or Mac OS X 10.2 and later. No additional power supply required. | 【Wide Compatibility】Compatible with MacBook Pro (2021~2016), MacBook (2019~2015), iMac Pro (iMac), Acer Aspire Switch 12 S/R13, Predator 15/17X, XPS 13, 15, Alienware 13/15/17, Spectre x360, Microsoft Surface Pro, Book 2, Razer Blade 15/Stealth 13/Pro 17, Samsung Galaxy Tab Pro, S21, S20, S20 Plus, S20 Ultra and most other USB-C / A devices.(Currently doesn't support iPad Pro 2020) | 【WHAT YOU GET】uni high speed Memory Card Reader with 24/7 customer service and hassle-free 18-month warranty. Please rest assured we stand behind our products and customers.