AOpen is a major electronics manufacturer from Taiwan that makes computers an parts for computers, including motherboards, optical disk drives, and input devices as a subsidiary of Acer. They are perhaps most well known for their "Mobile on Desktop" (MoDT) solutions, which implements Intel's Pentium M platform on desktop motherboards. Because the Pentium 4 and other Netburst CPUs proved less energy efficient than the Pentium M, in late 2004 and early 2005, many manufacturers introduced desktop motherboards for the mobile Pentium M, AOpen being one of the first to offer such solutions.