Securedigital sd sdxc card memory size 256 gb read speed 95 mbs write speed 60 mbs bus interface uhs i mode of transmission uhs104 memory type mlc file format exfat operating voltage 2 7 3 6 v series a data premier pro suitable for 360 recording sports photography full hd recording 3d recording 4k recording device class digital camera dslr camcorder computer car radio tv printer macbook functions write protection switch standard sd 30