A Whitebook is a bare-bones Laptop. Like Desktop bare-bones machines, Whitebooks are partially assembled computers that consist of a case, power supply, and a pre-installed motherboard. Sometimes a cooling system is also included in the package. The other components that make up a functioning PC, like the CPU, RAM, and hard drives are left to the end user to obtain and install. Whitebooks also offer features that are not normally included in a Desktop bare-bones package, but are expected of Laptops. These include an integrated keyboard, touchpad, LCD panel, and speakers. While bare-bones computers are a far cry from the personalization offered by a custom system assembled completely from parts chosen by the builder, it's a huge step forward from the limited options most value added resellers provide. The flexibility offered by Whitebooks is also constantly getting better. One of the latest improvements is the introduction of a graphics interconnect standard for notebooks by NVIDIA called MXM. This slow but constant improvement could eventually lead to the same level of flexibility and customization Desktop owners currently enjoy.