P1N51AA-HY - Hypertec - DDR4 - module

4 GB - DIMM 288-pin - 2133 MHz / PC4-17000 - 1.2 V - unbuffered - non-ECC - for EliteDesk 800 G2 (SFF, tower); ProDesk 400 G3 (micro tower, SFF), 490 G3 (micro tower)