The Lexar Multi-Card 2-in-1 USB 3.0 Reader facilitates rapid data transfers between cards and computers. It features specialized slots for UHS-II SDXC and UHS-II microSDXC cards, allowing transfer speeds of up to 312 MB/s. For UHS-I media, the maximum transfer speed reaches approximately 170 MB/s. Both card slots can be utilized at the same time, and the reader connects to your host device via an integrated USB 3.0 Type-A port, which is also compatible with USB 2.0. General Features The Lexar Multi-Card 2-in-1 Card Reader offers transfer speeds of up to 312 MB/s for SD and microSD media. It's also backwards compatible with UHS-I at speeds up to 170 MB/s to improve your workflow. This reader has the ability read from both card slots simultaneously. It also allows for file transfers from one card to the other, helping to further enhance its versatility. Designed with a USB 3.0 Type-A interface, Lexar's 2-in-1 reader is also compatible with USB 2.0 ports.