Chrome OS is here. The Series 5 from Samsung is the first of the so-called Chromebooks, and I'm not sure it's exactly what we all had in mind when Google announced Chrome OS two years ago. Back then, our imaginations pictured computers that were thinner and lighter than those with enough horsepower to run Windows. We thought we would see computers running on ARM processors, not just x86. We were promised it would look like the Chrome browser with "a new windowing system." Frankly, I'm not sure we really knew what to expect. But if someone had told us, back then, that the first Chromebook would be a large and simple netbook that does little more than run only the Chrome browser, I don't think we would have made such a big deal about Google producing its own operating system.The Hardware