4 GB, DDR4, 2666 MHz, Non-ECC, 1.2 V, SO-DIMM 260-pin
DELL AA086413. Component for: Laptop, Internal memory: 4 GB, Memory layout (modules x size): 1 x 4 GB, Internal memory type: DDR4, Memory clock speed: 2666 MHz, Memory form factor: 260-pin SO-DIMM