A CD-ROM drive is a device that reads data stored on compact discs, known as CD-ROMs. These discs can hold a variety of information, including software, music, and videos. The drive uses a laser to read the data encoded on the disc's surface, allowing users to access the content stored on it. CD-ROM drives were commonly used in computers before the rise of digital downloads and USB drives. They connect to a computer via SATA or USB interfaces, enabling users to install programs or play media. While less common today, they played a significant role in the evolution of data storage and distribution.