Module from Synology. This single

module features a capacity of 4GB, a clock speed of 1866 MHz (PC4-14900), and a 204-Pin SO-DIMM form factor. It operates using 1.35V and is unbuffered.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. This memory module is protected by a limited 3-year warranty.CompatibilitySynology DiskStationDS918+DS718+DS218+DS418play