The product is a set of four Hynix 2GB DDR2 SDRAM server memory RAM modules with a total capacity of 8GB. Each module has a capacity of 2GB and operates at a bus speed of 667MHz. These DIMM modules are designed for servers and feature Error Correction Code (ECC) memory, ensuring reliable performance in enterprise networking and server environments. Made in the United States, these memory modules are a high-quality option for enhancing the performance and capabilities of server systems.