Micro sd card micro sdhc card memory size 8 gb read speed 50 mbs write speed 20 mbs bus interface uhs i file format fat32 operating voltage 27 36 v series pny high performance device class digital camera dslr camcorder mp3 player tablet pc mobile phone computer printer macbook sdhc class 10 uhs speed class u1 adapter sd card adapter dimensions 15 mm x 11 mm x 1 mm weight 04 g