About RS-MMC (Reduced-Size Multi Media Card)
RS-MMC (Reduced-Size Multi Media Card) was introduced as a smaller form factor of the MMC in In 2004. It is about half the size: 24 mm × 18 mm × 1.4 mm. The RS-MMC also uses a simple mechanical adapter to elongate the card so it can be used in any MMC (or SD) slot.
Memory cards depend on Flash memory and are used as strong state stockpiling, their fundamental purpose for existing being a modest method to store or move information among PCs and other device.
RS-MMC is based on the MMC standard and also share their form factor and size with MMCmobile cards. The difference between the two format is that MMCmobile cards are double voltage and can work in more seasoned telephones with a high-voltage (3V) space just as in latest models with a low-voltage (1.8V) slot.