Securedigital sd sdxc card memory size 256 gb read speed 60 mbs write speed 20 mbs bus interface uhs i mode of transmission uhs104 file format exfat operating voltage 2 7 3 6 v suitable for 4k recording 3d recording full hd recording sports photography device class macbook dslr digital camera printer camcorder functions write protection switch manufacturers warranty lifelong standard sd 301 sdhc class 10 uhs speed class u1 adapter with