This product is a lot of 2 Kingston KCP421SS8/8 16GB DDR4 SDRAM PC4-17400 SODIMM memory modules. Each module has a capacity of 8GB, and they run at a bus speed of PC4-17000 (DDR4-2133). These memory modules are designed for computer systems that require reliable and high-performance memory capacity, and they have a total capacity of 16GB when combined. The SO-DIMM form factor makes them compatible with a variety of devices, and the Kingston brand ensures quality and compatibility.