From the images, we can see two buttons on the right side of the bezel. (phoneradar.com)
Also, the reason this device has a sunken screen is because the Neonode IR tech requires it (the IR shoots out from the inner sides of the bezel to form a touch detection grid). (goodereader.com)
Android was designed for mobile computing, but so is Windows 10, and Windows 10 users can easily swap between regular Desktop Mode and into Tablet Mode with larger tiles and the many, many tablet settings, by swiping from the right side of the bezels onto the display to swap between mode of operation. (tabletmonkeys.com)