Key specifications:

1. Capacity: This RAM module has a capacity of 4 gigabytes (4GB), which is the amount of data it can store and work with at any given time.
2. Memory Type: It uses DDR4 technology, which stands for Double Data Rate 4th Generation. DDR4 is the latest standard for RAM as of my last knowledge update in September 2021, offering improved performance and energy efficiency compared to its predecessors.
3. Speed: The RAM operates at a speed of 2666 megahertz (MHz). This refers to the data transfer rate or the frequency at which the RAM can read and write data. A higher speed indicates better performance, but the actual impact on performance depends on the rest of your system’s components.