The unbranded CR48 was the first publically available prototype of the Chromebook, distributed to beta testers through its Chrome OS Pilot Program in December 2010. It was manufactured in a very limited quantity. “CR48″ refers to an isotope of chromium. Response to the CR48 test program was very positive overall.
The Chromebooks made by Samsung and Acer in 2011 do not stray too far from the understated, black Macbook-like design of the CR48.