NVMe M.2 SSD designed specifically for Synology NAS systems. Optimized for NAS caching, it significantly improves random I/O performance and reduces latency. It is particularly effective in multi-user environments and applications that demand high performance, such as database applications. 【Main Specifications】 Capacity: 400GB Form Factor: M.2 2280 Interface: NVMe PCIe 3.0 x4 Sequential Read: Up to 3,000 MB/s Sequential Write: Up to 750 MB/s Endurance (TBW): 491 TB Model Number: SNV3410-400G 【For those considering purchasing】 Compatible with Synology NAS models. Please check the manufacturer's website or other sources to confirm that your NAS model is compatible with this product before purchasing. Since it is new and unopened, operation has not been confirmed. If any initial defects occur, please contact the manufacturer's support. Returns are not accepted to prevent product substitution, so please understand this before purchasing. 【Shipping】 Free shipping It will be carefully packaged with cushioning material and shipped via Mercari's anonymous delivery service. If you have any questions, please feel free to comment. Thank you.