Compact Flash CF Card Reader, WEme Aluminum USB 3.0 Micro SD Card Converter with OTG Adapter for Extreme Pro Professional Sandisk/ Lexar SDHC Memory Card and Samsung Galaxy, Mac Mini, Windows, Linux Multi function OTG Micro B to 3 slots USB 3.0 Specification Card Reader,allow you to enjoy high data and files sync transfer rates of up to 5Gbps t so you spend less sync time (actual rates depend on your device's speed). Devices backwards compatible with USB 2.0/1.1Connects to your mobile/Tablet devices that support USB On-The-GO (USB OTG) Fast Data/Files Access and Transfer Rate Super-Speed (5Gps)/ High-Speed (480Mbps)/ Full-Speed (12 Mbps),and creates a natural extension to your latest computers and smart devices -- easily connect Windows computer(Windows XP/ Vista/ 7/ 8/ 8.1/ 10/ 32/64-bit), MAC OS8.6.9.X and later version Device. USB 2.0 OTG Adapter Converter, 3*slots support the memory cards as CF type (3.3mm)/MD, SD/MMC, Micro SD/MD/MMC/SDHC, Support SDXC 2TB CF/SD/TF Micro/SDXC, with PowerPlug & Play and Hot swapping capability. No external power supply required , USB Bus powered. Draw Power directly from USB3.0 Port.Transfer high-resolution images and video recordings to your computer faster and more efficiently Stylish Design: Aluminum alloy cover with a 20cm USB data cable, easy for both laptop and PC users. To maximize the performance of your memory cards and save time when transferring files, it does not support multiple cards to use at the same time. More easily for information exchange