Synology SNV3410-400G is a 400 GB M.2 NVMe SSD designed for caching in Synology systems. It can help improve I/O responsiveness by accelerating access to data held on traditional hard drives.
The drive uses an M.2 2280 form factor and a PCIe 3.0 x4 NVMe interface. Synology specifies sustained sequential speeds of up to 3,000 MB/s for reading and 750 MB/s for writing. Its published sustained random performance is 225,000 IOPS read and 45,000 IOPS write at 4 KB, QD256; actual results can vary with the host system.
The stated endurance rating is 491 TBW. Synology presents this model for use as an SSD cache in its systems.