The MTA4ATF51264HZ-2G6E1 is a high-speed DDR4 SODIMM (Small Outline Dual In-line Memory Module) designed by Micron, one of the leading manufacturers of memory and storage solutions. This module operates at a speed of 2666 MT/s (Millions of Transfers per Second) and has a configuration of 512Mx64, signifying a total capacity of 4GB. The module utilizes a 260-pin interface, which is standard for DDR4 SODIMMs, allowing for high-speed data transfer and improved power efficiency compared to previous generations. The '1Rx16' in its specification indicates that this module is organized as a single rank with 16-bit data channels, utilizing Micron's high-quality 512Mx16 4C memory chips. This specific organization and chip density make it an excellent choice for laptop systems and small form factor computers requiring high-speed memory within limited space. Its low-voltage operation (V) signifies improved energy efficiency, which is crucial for portable devices. The module's design adheres to industry standards for compatibility and reliability, making it a solid choice for both upgrade and original system configurations.