Quick Answer: ASUSTeK Computer Inc., doing business as Asus, is a Taiwanese multinational computer, phone hardware and electronics manufacturer headquartered in Beitou District, Taipei, Taiwan. Its products include desktop computers, laptops, netbooks, mobile phones, networking equipment, monitors, Wi-Fi routers, projectors, motherboards, graphics cards, optical storage, multimedia products, peripherals, wearables, servers, workstations and tablet PCs. The company is also an original equipment manufacturer. As of 2024, Asus is the world's fifth-largest personal computer vendor by unit sales. Asus has a primary listing on the Taiwan Stock Exchange under the ticker code 2357 and formerly had a secondary listing on the London Stock Exchange under the ticker code ASKD.