 The first flash-memory SSD based PC to become available was the Sony Vaio UX90, announced for pre-order on 27 June 2006 and began shipping in Japan on 3 July 2006 with a 16 GB flash memory hard drive.In late September 2006 Sony upgraded the SSD in the Vaio UX90 to 32 GB.One of the first mainstream releases of SSD was the XO Laptop, built as part of the One Laptop Per Child project.