AddOn 1GB (1 x 1 GB) 184-pin DDR SDRAM Desktop PC RAM Module.Dual M.2 SSD Adapter Card for Extraordinary Cache Performance.Limited Warranty: 3 Year.Part Number: M2D18.Elevate Your Storage Performance To the Next Level: Designed to supercharge your NAS I/O performance, Synology M.2 SSD adapter M2D18 significantly reduces random I/O latency, benefiting applications such as photo indexing, file search, and virtualization environments. The dual M.2 SSD slots support both SATA and NVMe SSD, meaning higher SSD read/write caching and more primary drive bays reserved for data storage. Attachable heatsink accelerates thermal dispatching of M.2 SSD and assures system stability with excellent performance. Its flexibility in supporting 2280/2260/2242 form factors and meeting various SSD options saves you from vendor lock-in.