Synology SNV3400-400G 400 GB Solid State Drive - M.2 2280 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 With PCI Express NVMe 3.0 x4 interface get superb reliability and high-speed data transfer 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