Write short note on pen drive.

 A pen drive, also known as a USB flash drive or thumb drive, is a portable data storage device that can be connected to a computer or other electronic device via a USB port. It typically consists of a small, rectangular plastic or metal case that houses a flash memory chip and a USB connector.

Pen drives are popular for their compact size, durability, and high storage capacity. They are used to store and transfer data such as documents, photos, videos, and music between different devices. Pen drives are commonly used for data backup, file sharing, and as a convenient way to carry important files while traveling.

Pen drives are available in various storage capacities, ranging from a few megabytes to several terabytes. They also come in a variety of shapes, sizes, and colors, making them not only practical but also fashionable accessories.