The ADATA 16GB DDR4-2666 PC4-21300 2Rx8 SO-DIMM RAM (AO1P26KCST2-BBXS) is a high-quality memory module designed for computers and laptops. With a total capacity of 16GB and a bus speed of PC4-21300 (DDR4-2666), this RAM provides fast and efficient performance for your computing tasks. The SO-DIMM form factor makes it easy to install and compatible with a wide range of devices. Made in China, this ADATA RAM is a reliable choice for enhancing the speed and responsiveness of your system.