In Windows this button launch Acer Arcade or Acer Arcade Deluxe application - it's media center like XBMC.
At this moment this button recodgnized by X.org like XF85Launch2.
Then maybe better (and more right) to reassign this button to KEY_MEDIA scancode?
Also there is hardware Acer Arcade button above the Acer MediaTouch sensors buttons, and right of the Del and Home buttons: tech2.in. com/media/ images/ 2008/Feb/ img_47811_ acer_aspire_ 5920_7. jpg
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In Windows this button launch Acer Arcade or Acer Arcade Deluxe application - it's media center like XBMC.
At this moment this button recodgnized by X.org like XF85Launch2.
Then maybe better (and more right) to reassign this button to KEY_MEDIA scancode?