Western Digital 1TB WD Blue SA510 SATA Internal Solid State Drive SSD - SATA III 6 Gb/s, 2.5"/7mm, Up to 560 MB/s - WDS100T3B0A Internal SSD, purchased from Amazon about a year ago to rebuild a PC, and didn’t end up doing it. Possibly still has a new Windows OS operating system on it, but no guarantees. In perfect condition otherwise! Offers always welcome. Please reach out if you have any additional questions!