Optical drive

An optical drive is any form of media reader that reads data via a laser or other focused light projection. These include, but are not limited to:
 * CD-ROM
 * CD-R
 * CD-RW
 * DVD-ROM
 * DVD-R
 * DVD+R
 * DVD+/-R
 * DVD-RW
 * Blu-ray disc
 * Blu-ray-R
 * Laser Disk

There are a number of varieties within these categories as well. The most notable being single-layered, dual-layered, and multi-layered burning devices. These work on the basis of changing the intensity of the laser to read deeper into the optical media's data layer. A dual-layered disk will provide twice the storage capacity of a single layered disk.