HP 836307-131 keyboard is a Portuguese-layout replacement keyboard for compatible HP EliteBook laptops. Its -131 regional suffix identifies the Portugal version, while HP’s parts guide classifies this part family as non-backlit.
The listing describes the keyboard as spill-resistant and names the HP EliteBook 745 G3, 745 G4, 840 G4 and 840r G4 as compatible models. It is intended for replacing a keyboard in one of those listed laptops, with Portuguese keys for the Portugal region.