Sold as 1 Each. Compact and portable SD/microSD reader perfect for high-speed on-the-go file transfer. Features the ability to read from both SD and microSD card slots simultaneously. Offers transfer speeds of up to 312MB/s for SD and microSD; backwards compatible with UHS-I with up to 170MB/s transfer speeds. Supported card formats: SD, SDHC, SDXC, microSD, microSDHC, microSDXC, and SD/microSD UHS-I and UHS-II cards. Dimensions: 0.6'H x 1.5'W x 2.51'D. 2-year manufacturer limited warranty. Compatible with USB 3.1 and 2.0 ports.