Securedigital sd sdxc card memory size 64 gb read speed 90 mbs write speed 20 mbs bus interface uhs i mode of transmission uhs104 file format exfat operating voltage 2 7 3 6 v series pny high performance suitable for full hd recording 4k recording device class macbook dslr digital camera printer camcorder labeling field functions write protection switch manufacturers warranty 5 years standard sd 301 sdhc class 10 uhs speed class u3 a