---
name: "mmcsd"
section: "4"
platform: "freebsd"
package: "base"
version: "16.0-CURRENT-20261027-61c70dc16a79"
release: "FreeBSD 16.0-CURRENT (2026-10-27)"
platforms: ["freebsd"]
url: "https://new.carta.tech/mmcsd"
---

# mmcsd(4)

MMC and SD memory card driver

## NAME

**mmcsd** – MMC and SD memory card driver

## SYNOPSIS

**device** **mmcsd**

## HARDWARE

The **mmcsd** driver implements direct access block device for MMC and SD memory cards.

## SEE ALSO

[mmc(4)](/mmc/4.md), [sdhci(4)](/sdhci/4.md) *SD Specifications, Part 1, Physical Layer, Simplified Specification*. *The MultiMediaCard System Specification*.

## HISTORY

The **mmcsd** driver appeared in FreeBSD 7.0.