We no longer carry Synology SNV3400-400G - solid state drive - 400 GB - PCI Express 3.0 x4 (NV (6115514), but we found this replacement for you. Compare the discontinued item to the replacement item:
Know your gear
Synology SNV3400 Series NVMe SSDs are designed to intelligently work with Synology DiskStation Manager (DSM) to boost I/O performance. These high-performance NVMe drives accelerate the slower but higher-capacity storage space provided by traditional hard drives, enabling cost-effective, in-place upgrades for existing systems.