Synology SNV3000 SNV3500-400G 400 GB Solid State Drive - M.2 22110 Internal - PCI Express NVMe (PCI Express NVMe 3.0 x4) - 0.68 DWPD - 500 TB TBW - 3100 MB/s Maximum Read Transfer Rate

With the high-write speed of 550 MB/s, get a quick response when updating or transferring files PCI Express NVMe 3.0 x4 interface provides quick data transfer and greater throughput Provides sufficient storage capacity of 400 GB for your computer The high-read speed of 3100 MB/s maximizes system performance and saves time while you are doing complex tasks