See OLPC. XO laptops use a custom Red Had Fedora OS running the Sugar user interface. Starting in 2007, they were powered by x86 CPUs but were switched to ARM chips in 2013 with the XO-4 Touch.

XO sauce is served as a condiment at high-end Chinese restaurants in Hong Kong. Despite its name, it has nothing to do with XO cognac - it's called that because the name evokes a sense of luxury ...