Lexar 40X speed SD card in an incredible performance for video capture and other demanding applications evaluated. The most popular memory card form factor, Lexar SD cards have a switch for cancellation of prevention to keep your data safe accidents overwritten or deletions. Take your high resolution digital images and store other types of data securely and quickly to write with a sustained speed of 6. 0 MB / sec *. Lexar 40X Platinum SD Card works with any SD compatible devices such as cameras, camcorders, PDAs and digital music players. Lexar 40X SD Card has a shell. It has a memory of 256 MB.