Designed for UHS-II devices and backwards compatible with SD 3.0- and SD 2.0-capable devices, EP PRO-II SDXC also supports devices with HD and UHD (ultra-high definition) capabilities. Card capacity ranges from 16–64 GB, and respective max read and write speeds of 280 and 250 Mbps help fulfill need for storage and speed without delay. Meeting SD 4.0 specifications, product is capable of recoding video in 4K UHD as well as still pictures.