Cytotoxicity-activating receptor that may contribute to the increased efficiency of activated natural killer (NK) cells to mediate tumor cell lysis. Interacts with TYROBP/DAP12. Interacts with KMT2E isoform NKp44L. Selectively expressed by activated NK cells and by in vitro cultured (i.e. activated) TCRg/d lymphoid cells. Belongs to the natural cytotoxicity receptor (NCR) family.