Chromebooks a tad too mobile for you? Sensing the market is at last ready for Google's web-based OS, Xi3 decided to ship the ChromiumPC, an updated version of the modular, Chrome-based desktop it trotted out as a concept last year. The computer (also known as the 5 Series) has a processor module and two I/O ones -- a design whose promise is that installing a different operating system should be as easy as swapping out that first board. And, cheekily, the company expects it to go on sale July 4th, a day when Chromium owners can "declare their independence from the built-in obsol
