DELL AB640683, 16 GB, 1 x 16 GB, DDR4, 3200 MHz, 260-pin SO-DIMM DELL AB640683. Component for: Laptop, Internal memory: 16 GB, Memory layout (modules x size): 1 x 16 GB, Internal memory type: DDR4, Memory speed: 3200 MHz, Memory form factor: 260-pin SO-DIMM, ECC