Micro Secure Digital (MicroSD) is a type of removable flash memory card used in many consumer electronic devices, such as smartphones, tablets, and digital cameras. MicroSD cards are designed to be small and portable, and they are typically used to store media files, such as photos, music, and videos. MicroSD cards are available in a range of capacities, and they are typically used to expand the storage capacity of devices that do not have enough built-in storage. MicroSD cards are also used to transfer files between devices, such as when transferring photos from a smartphone to a computer. They are equipped with security features to protect the data stored on them from unauthorized access.