Pro 233X UHS-1 SDXC Memory Card offers groundbreaking performance for the professional or enthusiast photographer with a 64GB capacity. Premium-grade components and advanced controller technology maximize your digital experience while delivering quality and reliability. With UHS-1 Interface (Ultra High Speed Interface) supporting host device bus speeds up to 104MB per second memory card maximizes your ability to capture offload and process your digital photography. Transfer speeds up to 233X (35MB per second) are ideal for faster workflow and capture in multi-megapixel photography and 1080p high-definition video recording. Memory card is Class 10-rated for standard HS (High Speed) interface equipped host devices. Write-protect switch prevents accidental deletion. Memory card requires SDXC host device and exFAT file system update for Windows Operating Systems.