The product is a lot of 4 SK hynix 16GB server memory modules with a total capacity of 64GB. It features ECC memory, registered design, and a bus speed of PC4-17000 (DDR4-2133). The memory modules are designed for high-performance servers and networking equipment, with a lifetime manufacturer warranty. With a form factor of RDIMM and 288 pins, these modules offer reliable and efficient memory solutions for enterprise environments. Made in South Korea by SK hynix, these memory modules provide quality and stability for server applications.