MultiMediaCard
Videos
MultiMediaCard is a memory card standard used for solid-state storage, originally introduced in 1997 by SanDisk, Siemens, and Nokia. Designed as a compact, low-pin-count, postage‑stamp‑sized card alte
Undersides of an MMC (left) and SD card (right) showing the differences between the two formats
Top of four types of MMC cards (clockwise from left): MMC, RS-MMC, MMCplus, MMCmobile, metal extender
Bottom of the same four cards
Comparison of memory cards
Videos
This table provides summary of comparison of various flash memory cards, as of 2025. Of memory cards, SD cards allow for largest capacity by far, though the much bulkier CFexpress cards can also match
MultiMediaCard
…Vita was found to be based on the MMC standard, but with a different pinout and support for custom initialization commands as well as copy protection. Comparison of memory cards eMMC Standard – JEDEC.org…
Chain of adapters: microSD→miniSD→SD→CF
MM Cplus
MS PRO DUO
SDMSHX3 008G J31