Securedigital sd sdhc card memory size 32 gb read speed 48 mbs write speed 13 mbs bus interface uhs i file format fat32 operating voltage 27 36 v series samsung evo device class car radio macbook tv dslr digital camera camcorder computer printer tablet pc functions write protection switch standard sd 301 sdhc class 10 uhs speed class u1 adapter sd card adapter dimensions 32mm x 24mm x 21mm weight 2 g