Common Building Block
# Common Building Block

Common Building Block (CBB) was a set of technical standards for laptop components introduced by Intel in 2005, and adopted by some manufacturers, including Asus, Compal, and Quanta.

## Creation

In 2004, the Common Building Block program promoted the use of industry-accepted mechanical and electrical specifications for three notebook components: 14.1-inch, 15-inch, and 15.4-inch liquid crystal displays (LCDs); 9.5mm and 12.7mm optical disc drives (ODDs); and 2.5-inch hard disk drives (HDDs). The program consisted of:

* A Web site to provide a centralized repository of information about the program, participants, and platform and ingredient specifications
* A continually updated list of CBB-compliant ingredients (submitted by suppliers)
* A testing and verification service for candidate products

The defunct repository site mobileformfactors.org was established to standardize components, and included:

* Hard disk drives
* Optical disc drives
* Liquid crystal display panels
* Battery packs
* AC/DC power adapters
* Keyboards
* Customizable notebook panels
