Module from Synology. This

module features a capacity of 32GB, a clock speed of 2666 MHz (PC4-21300), and a 288-pin RDIMM form factor. It operates using 1.2V, is registered, and uses ECC technology to correct the most common kinds of internal data corruption.Adding more memory to your system will help boost its capabilities, including improving system performance and application responsiveness. Start-up times will be improved with fewer delays during routine operations, and more programs will be able to run simultaneously with easier switching between them.CompatibilitySynology NASFS6400FS3400SA3400