Ssd SATA M.2 memory size 4TB SATA SSD This is a SATA drive, folks, it's SATA, not NVMe. Its speed reaches up to 500 MB/s. The SSD is new and unused, I just opened it to confirm its size. Always make sure to check your motherboard manual to see if your M.2 slot supports SATA or NVMe protocol only. One-week warranty. Try it and put your files on it. If you find anything wrong with it, return it and get your money back.