The product is a lot of 23 SK Hynix 8GB PC4-2666V-RD1 DDR4 Server RAM memory modules. These memory modules are DDR4 SDRAM type with a bus speed of PC4-21300 (DDR4-2666). Each module has a capacity of 8GB and is designed for server use with ECC memory and registered features. The Hynix brand ensures quality and reliability in server memory applications. Ideal for use in enterprise networking and server setups requiring a high amount of memory capacity and performance.