Synology M2D20 is a M.2 NVMe SSD adapter card designed to supercharge your NAS I/O performance. The multi-queue capability of NVMe SSD greatly benefits latency-sensitive applications such as photo indexing, file search, and virtualization deployments. Host Bus Interface PCIe 3.0 x8 Bracket Height Low Profile and Full Height Size (Height x Width x Depth) 71.75 mm x 181.9 mm x 15.8 mm Operating Temperature 0°C to 40°C (32°F to 104°F) Storage Temperature -20°C to 60°C (-5°F to 140°F) Relative Humidity 5% to 95% RH Warranty 5 Years Notes The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more) Storage Storage Interface PCIe NVMe Supported Form Factor 22110 / 2280 Connector Type and Quantity M-key, 2 Slots Compatibility Applied Models NVMe SSD SA series:SA3600, SA3400 21 series:RS4021xs+, RS3621xs+, RS3621RPxs, RS2821RP+, RS2421RP+, RS2421+, RS1221RP+, RS1221+ 20 series:RS820RP+, RS820+ 19 series:DS2419+, DS2419+II, DS1819+ 18 series:RS2818RP+, RS2418RP+, RS2418+, DS3018xs, DS1618+ Notes DSM version requirement: 6.2.3-25426 or later version