SD (Secure Digital) cards are widely used flash memory storage devices utilized in a variety of consumer electronics, such as cameras, smartphones, and tablets. Known for their compact size, SD cards offer a reliable solution for portable storage needs.

Featuring different capacity classifications such as SD, SDHC, and SDXC, these cards cater to varied storage requirements, from standard definition to high-definition multimedia content. Their high-speed data transfer rates make them indispensable in applications requiring quick read/write capabilities.

Leading manufacturers such as SanDisk, Kingston, and Samsung provide a range of SD cards, ensuring high quality and compatibility across numerous devices.