The Samsung 16GB PC4-2666V-UB1-11 memory module is a high-quality DDR4 SDRAM with a total capacity of 16GB spread across 2 modules. These modules are SO-DIMM in form factor and feature registered ECC memory, ensuring reliable performance for your computer system. With a bus speed of PC4-2666V and 260 pins, this memory module is a solid choice for upgrading your computer's memory capacity. Made by Samsung, a trusted brand in the industry, this memory module is a reliable and efficient component for improving your system's performance.