This is a Gnome keyboard key for your FSF-certified Libreboot X200 laptop - a customized version of the Lenovo ThinkPad X200 modified to respect your freedom (read the following article for more info: http://www.fsf.org/news/libreboot-x200-laptop-now-fsf-certified-to-respect-your-freedom). Some Lenovo X200 keyboards might have different hinge styles. This print is designed for model L39 (small key). Attach the button with caution - the fixations could easily break during the assembly. This model is available for downlaod at Thingverse: http://www.thingiverse.com/thing:920891