PNY's Elite Performance SDXC (Secure Digital Extended Capacity) cards are the high speed flash memory cards from PNY. They are rated Class 10 and feature an Ultra High Speed (UHS-1) data bus for incredible transfer rates with read speeds up to 90 MB/s. The cards are compatible with SDXC host devices ranging from the latest hi-megapixel cameras and HD camcorders to hi-end DSLRs and laptops.