This product is a lot of 4 Patriot 8GB DDR4 PC4-19200 2400MHz memory modules, totaling 32GB of capacity. Each module has a capacity of 8GB, making it easy to upgrade your computer's memory with a simple installation process. The black-colored RAM modules are designed with a UDIMM form factor and are compatible with DDR4 SDRAM technology. With a memory speed of 2400 MHz and a bus speed of PC4-19200, these modules offer fast and reliable performance for your computing needs.