The product is a lot of 2 SK Hynix DDR5 64GB 2RX4 PC5-4800B RDIMM memory modules, totaling 256GB of memory capacity. These memory modules are designed for server compatibility with ECC registered functionality, making them suitable for high-performance computing tasks. With a frequency of 4800MHz and a bus speed of PC5-38400 (DDR5-4800), these modules offer fast data transfer speeds and reliability for demanding applications. The Hynix brand ensures quality and performance, while the RDIMM form factor and 288 pins make them compatible with a wide range of servers.