High-performance memory module: The Rimlance 4GB DDR3 1866MHz SODIMM ensures your notebook runs smoothly and efficiently, enhancing overall system performance. Energy-efficient design: Operating at a low voltage of 1.35V, this memory module helps reduce power consumption, thereby extending the battery life of your notebook. Optimal data transfer rates: With a speed of 1866MHz and PC3-14900 specification, this memory module provides fast and reliable data transfer, perfect for multitasking and demanding applications. Compatibility and reliability: The 2RX8 configuration ensures broad compatibility with a wide range of notebooks, making it a versatile upgrade option for various systems. Single module convenience: The Rimlance 4GB (1X4GB) pack offers a straightforward and hassle-free upgrade, allowing users to easily enhance their notebook's memory capacity and performance.