The M471B5273EH1-CH9 is a DDR3-1333 SO-DIMM module from Samsung, designed to enhance the performance and efficiency of laptops and compact PCs. This 4GB memory module benefits from a 512Mx64 configuration and is built with high-quality [256Mx8 16C] chips, ensuring reliable performance. Operating at a speed of 1333MHz, it meets the DDR3-1333 standard and interfaces through a 204-pin SO-DIMM slot. The module supports dual-rank (2Rx8) memory organization, favoring systems requiring high-density memory modules for superior performance and multitasking capacity. Samsung's reputation for quality and innovation makes this module a top choice for users looking to upgrade their system's memory capabilities.