The ADATA 16GB DDR4 2666MHz PC4-21300 UDIMM Desktop RAM is a high-quality memory module designed for desktop computers. With a bus speed of PC4-21300 (DDR4-2666), this memory module offers fast and efficient performance. The UDIMM form factor and DDR4 SDRAM technology ensure compatibility with a wide range of systems. Backed by a lifetime manufacturer warranty, this ADATA RAM provides reliable and dependable service for all your computing needs.