SK hynix 4 GB SO-DIMM DDR4 3200 MHz (HMA851S6DJR6N-XN)

The SK hynix 4 GB SO-DIMM DDR4 3200 MHz (HMA851S6DJR6N-XN) is a laptop memory module that conforms to the DDR4 standard in SO-DIMM form factor, designed for compact systems with a 260-pin memory slot. The module capacity is 4 GB with an effective speed of 3200 MT/s, and the commercial designation PC4-25600 indicates theoretical bandwidth sufficient for basic office tasks, learning, browsing, and multimedia use. The module is an unbuffered Non-ECC type, meaning it does not use buffering and does not support error correction—a standard solution for most consumer-grade laptops, all-in-ones, and mini-PCs. The DDR4 operating voltage is 1.2 V, making this module more power-efficient than older DDR3 modules. According to technical specifications, the SK hynix 4 GB SO-DIMM DDR4 3200 MHz has an organization of 512M×64 and is built on four 512M×16 chips in a 1Rx16 configuration. In practical use, it is a good option for replacing stock memory, expanding a budget-oriented system, or restoring a compatible configuration. Before purchase, it is important to verify DDR4-3200 support in your specific device, as the actual frequency may be limited by the memory controller of the CPU or motherboard.