The 64GB High-Performance microSDXC 633x Class 10 UHS-I Memory Card from Lexar features a maximum read speed of 95MB/s along with a minimum transfer rate of 10MB/s. It's compatible with devices that have a compatible microSDXC slot and can be used with full-sized SDXC slots via an optional microSD adapter. This Class 10 UHS-I card is supplied with a USB 3.0 card reader for high-speed file transfer to your computer.