4 GB, DDR4, 2400 MHz, 1.2 V
HP 862397-855, 4 GB, 1 x 4 GB, DDR4, 2400 MHz, 260-pin SO-DIMM
HP 862397-855. Component for: Laptop, Internal memory: 4 GB, Memory layout (modules x size): 1 x 4 GB, Internal memory type: DDR4, Memory clock speed: 2400 MHz, Memory form factor: 260-pin SO-DIMM