The product is a*2* 8GB DDR4 RAM module from Kingston, featuring a bus speed of PC4-21300 (DDR4-2666) and ECC memory characteristics. This DIMM module has a total capacity of 8GB and is designed for high performance in computer systems. With a form factor of DIMM and a capacity of 8GB per module, this RAM is ideal for upgrading or replacing existing memory modules to improve system speed and efficiency. The product is manufactured in China and is a reliable choice for enhancing the memory capacity of your system. Tested , came out of new desktop.