HP 922749-211 is a backlit keyboard part for Hungarian use, listed by HP for the Elite x2 1012 G2 Tablet. Its backlight can make the keys easier to see in dim surroundings, while the Hungarian layout is suited to typing in that language.
The distributor lists compatibility with the HP Elite x2 1012 G2 Tablet and its ENERGY STAR version, as well as the HP Z240 Tower Workstation. This is a specific keyboard part, so its reference and regional layout are useful identifiers when matching it to a device.
The service guide identifies the part as a backlit keyboard; no package contents or additional technical details are confirmed in the cited sources.