It looks like a standard SD card, but SanDisk’s new Extreme PRO SDXC UHS-I memory card is noteworthy, by packing 512GB into its flat frame, it’s the highest capacity SD card available to consumers. The company says the huge card is aimed at pro-level photographers and videographers who want to shoot in 4K definition. Lexar released the first 256GB SD card onto the market in 2012, but SanDisk has made an effort recently to give its products the most storage space, launching two biggest-in-class memory cards this year.