Many people out there interested in SD Memory with cheap price but do not know if the disadvantages, even worse it could damage your devices. I will share you my experiences that other user ask me. Three things to be consider before buying an SD Memory. Storage Capacity I know the storage Capacity is the first thing in your mind. The majority of consumers only prioritize capacity factor when purchasing an SD card. This can be considered normal because storage has become an important factor in the era of mobile devices. Standard SD card (SDSC) has a capacity of 1MB - 2GB, sometimes up to 4GB. High-capacity SD card (SDHC) had more major storage size of between 2GB - 32GB.