Synology announces new 800GB capacity SNV3400 M.2 2280 and SNV3500 M.2 22110 NVMe SSDs with sequential writes of 1000 MB/s and support for larger cache applications : r/synology
Amazon.com: GLOTRENDS Dual 22110 M.2 X4 PCIe Adapter for One M.2 PCIe SSD and One M.2 SATA SSD, EMI Protection Cover Built-in Fan (PA13-FAN) : Electronics