I have two brand new Seagate Exos Enterprise 7E10 8TB hard drives for sale. I mistakenly bought SAS drives when I needed SATA drives, and by the time I realized it they were past the 30 day return window. They have never been used. I can provide the receipt to show they were purchased new. One has been opened when I tried to use it but realized it wasn't compatible with the NVR.