Customizable notebooks (configure-to-order)

As of early 2009, Sony offer a customization option on higher-end machines through Sony's high-street and online retail store, SonyStyle,com. Customization options include operating system (64-bit rather than 32-bit versions of Windows), RAM, graphics hardware, and in some models, casing. Configure-to-order machines can be distinguished by the fact their 8-digit product code starts with 54 rather than 27 or 28.