Editing SD card (section)

===<span class="anchor" id="Physical size"></span>Physical size===
{{More citations needed|section|date=September 2023}}
The SD card specification defines three physical sizes. The SD and SDHC families are available in all three sizes, but the SDXC and SDUC families are not available in the mini size, and the SDIO family is not available in the micro size. Smaller cards are usable in larger slots through use of a passive adapter.

====Standard====
[[File:MicroSD MemoryCard 002.jpg|thumb|upright|Size comparison of families: SD (blue), miniSD (green), microSD (red)]]
* SD (SDSC), SDHC, SDXC, SDIO, SDUC
* {{Nowrap|{{cvt|32|x|24|x|2.1|mm|frac=64}}}}
* {{Nowrap|{{cvt|32|x|24|x|1.4|mm|frac=64}}}} (as thin as MMC) for '''Thin SD''' (rare)

====<span class="anchor" id="MiniSD"></span>MiniSD====
* miniSD, miniSDHC, miniSDIO
* {{Nowrap|{{cvt|21.5|x|20|x|1.4|mm|frac=64}}}}

====<span class="anchor" id="microSD"></span> microSD====
The micro form factor is the smallest SD card format.<ref name="sdcard_choices">{{cite web|title=About|publisher=SD Association|url=https://www.sdcard.org/consumers/choices/|access-date=2011-05-02|archive-date=2011-11-21|archive-url=https://web.archive.org/web/20111121065042/https://www.sdcard.org/consumers/choices/|url-status=live}}</ref>
* microSD, microSDHC, microSDXC, microSDUC
* {{Nowrap|{{cvt|15|x|11|x|1|mm|frac=64}}}}