The Micron MTA36ASF2G72PZ 16GB 2Rx4 PC4-3200AA RDIMM Server Memory is a high-quality memory module designed for server use. With a total capacity of 16GB and compatibility with the Micron 16GB 2Rx4 PC4-3200AA model, this DDR4 SDRAM offers reliable performance. Featuring ECC memory and ECC registered features, it ensures error correction and improved stability for critical server applications. With a form factor of RDIMM and 288 pins, this memory module is a solid choice for businesses seeking efficient and dependable memory solutions.I purchased only one of these by accident.