ASUSTeK Computer Incorporate (Asus) (TSE: 2357) (traditional Chinese: 華碩電腦股份有限公司) is a Taiwan-based company that produces motherboards, graphics cards, optical drives, PDAs, notebook computers, servers, networking products, mobile phones, computer cases, computer components and computer cooling systems. Commonly called by its brand name Asus (pronounced ah-soo-ss or [a'sus] in IPA), it is listed on both the London Stock Exchange and the Taiwan Stock Exchange. In 2007, one in three desktop PCs sold was powered by an ASUS motherboard; and the company's 2007 revenues reached US$6.9 billion.