SD (Secure Digital ): large capacity, fast speed, is the most common type of memory card, widely used in working digital cameras and other portable digital products.
MINI SD (MINI Secure Digital ): smaller capacity than SD, but smaller size than SD, many MP4 with MINI SD expansion slot.
CF (CompactFlash): the largest size of the memory card, high-speed high-capacity features, some of the read and write speed requirements of the higher digital devices used.
TF (microSD): the smallest size of the memory card, commonly used in cell phones and some small digital products.
MMC (MMCmobile): size is half the size of SD, Nokia cell phones are basically with MMC expansion slot.
MS (Memory Stick): Commonly known as memory stick, SNOY's digital camera is the MS card.
M2 (Memory Stick Micro ): the mini version of the memory stick, Sony Ericsson cell phone many are using the M2 card.