The Crucial PC4-21300 PC4 2666V 16GB DDR4 1RX8 2666MHz 260pin Laptop Memory module is a high-quality memory upgrade for laptops. With a total capacity of 16GB and a form factor of SO-DIMM, this DDR4 SDRAM module is designed to improve the performance and efficiency of your computer. The module is easy to install and compatible with various laptop models, making it a reliable choice for enhancing your system's memory capacity. Built by Crucial, a trusted brand in memory technology, this module ensures top-notch quality and performance for your computing needs.