Which built in componet is used for a permanent cd -rom or dvd drive in a notebook pc?

The built-in component used for a permanent CD-ROM or DVD drive in a notebook PC is typically referred to as an optical drive. These drives are often integrated into the laptop's chassis and are designed to read and write data on CDs, DVDs, and sometimes Blu-ray discs. However, many modern laptops have shifted towards slimmer designs, leading to a decrease in the inclusion of optical drives, with external drives becoming more common.