Securedigital sd sdxc card memory size 64 gb read speed 48 mbs bus interface uhs i file format exfat operating voltage 27 36 v series toshiba exceria device class macbook dslr digital camera printer camcorder mobile phone tablet pc labeling field functions write protection switch manufacturers warranty 5 years standard sd 30 sdhc class 10 uhs speed class u1 adapter without adapter protective properties x ray resistant dimensions 32mm