What Is a Micro SD Memory Card?

A microSD memory card offers an easy, affordable way to expand the onboard memory of a mobile device. The memory card is available in capacities from 4 GB up to 32 GB.

The memory card is additional storage space for extra photos, videos, files and music. A microSD memory card can be used in mobile phones, laptops, tablets and other devices. The cards are shockproof, X-ray proof and waterproof. They can operated in temperatures between -13 F and 185 F. Even if the device doesn't survive temperature extremes, the card will, notes SanDisk. The microSD cards are available in a variety of speeds.