Tyan
 Tyan Computer Corporation (泰安電腦科技股份有限公司; also known as Tyan Business Unit or TBU) is a subsidiary of MiTAC International and a manufacturer of computer motherboards including models for both Intel and AMD processors. They develop and produce high-end server SMP and desktop barebones systems as well as provide design and production services to tier 1 global OEMs and a number of other regional OEMs.The company was founded in 1989 by Dr. T. Symon Chang a veteran of IBM and Intel.