Adafruit Micro SD SPI or SDIO Card Breakout Board - 3V ONLY!
We have ✅ 1 available of the AF-4682 in our Sydney warehouse. An extra 100 units available with a short lead time.
The Adafruit Micro SD SPI or SDIO Card Breakout Board gives you fast microSD card access using either standard SPI or the higher-speed SDIO protocol. Unlike SPI-only breakouts, this board exposes the full SDIO bus with up to 4 data pins for significantly faster read/write speeds — roughly double the throughput compared to SPI on supported microcontrollers.
SDIO is ideal for projects that need to stream large files quickly, such as audio playback, video display, or high-frequency data logging. You can still use this board in SPI mode for simpler setups. Note that this board operates at 3.3V only — there are no level shifters or voltage regulators on board.
Key Features
- SPI + SDIO Support – Use standard SPI or faster multi-pin SDIO protocol
- Up to 4 Data Pins – SDIO mode provides significantly faster throughput than single-pin SPI
- MicroSD Card Slot – Standard push-push socket for microSD cards
- 3.3V Operation – Direct connection to 3.3V microcontrollers
- Breadboard Friendly – Includes header for easy prototyping
- Compact Breakout – Minimal footprint for embedding in projects
Ideal For
- High-speed data logging requiring fast write speeds
- Audio and video file streaming from microSD
- Projects that have outgrown SPI-only SD card speeds
- CircuitPython and Arduino projects on SDIO-capable microcontrollers
Package Contents
- 1× Adafruit Micro SD SPI/SDIO Breakout Board
- 1× Header pin strip
Resources
The Adafruit Micro SD SPI or SDIO Card Breakout Board - 3V ONLY! appears in the following collections:
