The NEMIX RAM 64GB (4X16GB) DDR4 2666MHZ PC4-21300 2Rx8 1.2V CL19 260-PIN ECC is a high-quality memory module designed for computers and servers. Produced by RAM, this module offers a total capacity of 64GB split into four 16GB modules. It is equipped with ECC memory features, ensuring reliability and error correction. Originating from China, this DDR4 memory module is a great choice for those looking to upgrade their system with a large capacity and fast speed. Compatible with Synology NAS.