Symantec states that the Netbook edition is optimized for netbooks. The Asus Eee PC is a subnotebook/netbook computer. This allows the laptop to function in the realm of a Netbook. Its main competitor in the low-cost netbook market was the Asus Eee PC line. The Macbook Air can be considered an expensive netbook. ASUS has allocated engineers to develop an Android-based netbook. The Samsung NC10 is a subnotebook/netbook computer designed by Samsung. Lenovo announced the first netbook product using Snapdragon SoCs that December. It is the desktop counterpart of the netbook. Unity debuted in the netbook edition of Ubuntu 10.10. The first version of the Ubuntu Netbook Remix was also introduced. Just under a third of all Dell netbook sales in 2009 had Linux installed. In 2009, Cloud was only officially available built into the GIGABYTE M912 Touch Screen Netbook. There are special Linux distributions, called netbook distributions, for these machines. In December 2011, Dell announced that it was exiting the netbook market.