The M471B5173BH0-CH9 by Samsung is a DDR3-1333 512Mx64 SODIMM 1Rx8 memory module that offers a total capacity of 4GB. Designed to be compatible with laptops and small form factor (SFF) PCs that require DDR3 1333 MHz SO-DIMM memory, it features 204 pins for connection. This module is built with eight 512Mx8 memory chips, arranged in a single-rank (1Rx8) configuration. This configuration is optimized for compatibility and stability, making it an excellent choice for users looking to upgrade their systems for improved performance in applications and multitasking. The M471B5173BH0-CH9 prioritizes energy efficiency and reliable performance, adhering to Samsung's high standards for quality in memory technology.