Glossary of Hard Disk Drive Terminology (Letter O)

Operating System
Software that allows the user and programs installed on your system to communicate with computer hardware such as a hard drive.

Original Equipment Manufacturer (OEM)
In the case of Western Digital, OEM customers are companies such as Compaq, Gateway, IBM and Dell.

OEM content
The portion of a company’s output sold to OEM customers, expressed as a percent of total production.