A. SD or SecureDigital cards were the first-generation of this type of flash memory card. They come in capacities up to 4GB however, there is no guarantee that a 4GB card will work in any SD card socket. According to the standard, 1GB is the maximum guaranteed working capacity. Capacities of 2GB and 4GB require modifications to the standard and flash card readers that will handle that format. Thankfully, a significant number of devices will easily handle cards up to 2GB in capacity.
SDHC stands for SecureDigital – HighCapacity and is More >