As MSI isn’t one of the largest computer makers out there, it’s understandable that their new product launches happen over a period of time, and across a number of regions, rather than all at once. A reasonable excuse, we’d say, for the MSI S20 Slider Ultrabook convertible that popped up on our radar many months ago. The unit, which has been slowly made available in the EU region, is finally on sale in the U.S.