... tf cards can be used as sd cards with a sd adapter.Functionit is mainly used for cellphone,GPS, ... :cellphone,gps and digital products with tf cards slots l0,Standardization:comply with SD association standardsWarmly tips1,capacity: ... year 3.packing ways:there are nude cards,cards with small white box package,retail blister package,4, ... of them 2gb 2g micro sd card with sd adapter and retail packing