The A-Tech 256GB 4x 64GB 2S2Rx4 PC4-19200R DDR4 2400 ECC RDIMM Server Memory RAM is a high-capacity memory module designed for servers. With a total capacity of 256GB spread across 4 modules of 64GB each, this DDR4 RAM provides reliable performance with ECC memory for error correction. The memory module has a normal profile and a form factor of RDIMM, with a voltage of 1.2V and a frequency of 2400MHz. This product is backed by a lifetime manufacturer warranty and is proudly made in the United States. Ideal for businesses and server applications requiring a large amount of memory capacity.