X2E91AA-HY - Hypertec - DDR4 - module

16 GB - SO-DIMM 260-pin - 2133 MHz / PC4-17000 - 1.2 V - unbuffered - non-ECC - for HP EliteBook 820 G3, 840 G3, 850 G3; ProBook 440 G4; ZBook 15 G3, 17 G3, Studio G4