The product is a 64GB kit of Samsung PC3L-12800R server RAM ECC RDIMM DDR3 memory modules. This kit consists of 4 modules, each with a capacity of 16GB, providing a total capacity of 64GB. The memory modules have a form factor of RDIMM and are designed for server use. They have a bus speed of PC3-12800 (DDR3-1600) and feature registered memory technology. The Samsung brand ensures high quality and reliability for your server memory need