HP 840800-041 is an advanced spare keyboard with an integrated TouchPad, listed in the HP ProBook 640 G2 parts catalogue. It is specified for models with a 14-inch display and designated for Germany.
The backlit keys make the keyboard easier to use when the surrounding light is low. Its TouchPad provides cursor control at the keyboard, so both typing and pointing are available from one part. This variant combines the German designation, backlighting and TouchPad in the exact 840800-041 part reference.