Fantastic! I felt I was taking a bit of a risk ordering this as I needed something to run Linux on, specifically Ubuntu 16.04. From reading reviews I was relatively confident that the T440 would be Linux friendly. But, proof is in the pudding, so it is said. And yes, when my T440 showed up, two days ahead of schedule, I immediately purged it of the Microsoft software and installed Ubuntu 16.04 on it. The installation went smooth as silk and I haven't come across anything that doesn't work running Ubuntu.The Ultrabook that I received looked clean and hardly used. Some reviews suggested that the age of the battery could be an issue so, I did order a backup battery at the same time that I ordered the Ultrabook. The battery that came with mine seems to be fine and I haven't yet used the one I ordered.