Lenovo 5M31N59979 is a memory module for notebooks, providing 16 GB of DDR5 memory in a compact SO-DIMM format. It is listed as a single module, suitable for adding memory capacity in a compatible notebook.
The module has a stated 5600 MHz clock frequency and a 5600 MT/s transfer rate. Its 288-pin SO-DIMM form factor identifies its physical memory format. This combination of capacity, DDR5 type and transfer rate makes the module a practical memory option for notebook systems that support these specifications.