HP - DDR4 - module - 4 GB - SO-DIMM 260-pin - 2400 MHz / PC4-19200 - 1.2 V - unbuffered - non-ECC - for HP 24X G6, 25X G6; EliteBook 725 G4, 735 G5, 745 G4, 745 G5, 755 G4, 755 G5, 820 G4, 830 G5, 840 G4, 840 G5, 840r G4, 850 G4, 850 G5; ProBook 430 G4, 430 G5, 440 G4, 440 G5, 450 G6, 45X G4, 45X G5, 470 G4, 470 G5, 64X G3, 64X G4, 650 G4, 65X G3; ProBook x360 440 G1; ZBook 14u G4, 14u G5, 15u G4