 The first flash-memory 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 16Gb flash memory hard drive.In late September 2006 Sony upgraded the flash-memory in the Vaio UX90 to 32Gb.A solid-state drive was offered as an option with the first MacBook Air introduced in 2008, and from 2010 onwards, all models shipped with an SSD.