The Micron MTFC4GACAJCN-4M is a 4GB DDR4 memory module. It's a 260-pin SO-DIMM form factor module, meaning it's designed for use in notebooks and other small form factor computing applications. The module operates at 2133 MT/s with a low voltage of 1.2 V. It features auto-refresh and self-refresh, along with On-Die Termination. The memory module is optimized for Intel's Skylake architecture, making it ideal for gaming laptops and mid-range desktop systems.