# MicroSD Card | ![img \|150](https://upload.wikimedia.org/wikipedia/commons/thumb/6/67/SD_Cards.svg/320px-SD_Cards.svg.png) | Secure Digital, officially abbreviated as SD, is a proprietary, non-volatile, flash memory card format the SD Association (SDA) developed for use in portable devices. | |-|-| | | wikipedia:: [SD card](https://en.wikipedia.org/wiki/SD_card) | [Overview | Understanding microSD and SD cards: speeds, markings and more | Adafruit Learning System](https://learn.adafruit.com/understanding-microsd-and-sd-cards-speeds-markings-and-more) ![Adafruit MicroSD card](https://cdn-learn.adafruit.com/assets/assets/000/104/902/original/components_SD_microSD_graphic.jpg?1632867604) [[Raspberry Pi]] - Use Class 10, v10 4k video recording/drones - Class 30, v30