Securedigital sd sdxc card memory size 64 gb read speed 300 mbs bus interface uhs ii file format exfat operating voltage 27 36 v series lexar professional device class macbook tv dslr digital camera computer printer camcorder mobile phone tablet pc functions write protection switch standard sd 410 sdhc class 10 uhs speed class u3 adapter usb adapter dimensions 32mm x 24mm x 21mm weight 2 g