The Kingston KVR21N15D8/8 memory module is a DDR4 DIMM with a total capacity of 8GB, divided into a single 8GB module. It operates at a bus speed of PC4-17000 (DDR4-2133) and is designed for non-ECC (error-correcting) memory applications in personal computers. This high-quality RAM from Kingston is ideal for upgrading or replacing existing memory modules to enhance the performance and efficiency of your computer system.