The HP 922749-141 backlit keyboard is a detachable keyboard accessory for the Elite x2 1012 G2 tablet. Its Turkish layout is intended for use in Turkey, and the built-in backlighting helps make the keys visible in dimmer settings.
It connects to the tablet through the docking interface and alignment posts, so the keyboard can be attached when you want to type and removed when you prefer to use the tablet on its own. The service guide also describes rotating the attached keyboard behind the tablet for carrying.
This variant is the Turkish backlit keyboard listed for the Elite x2 1012 G2.