Western Digital (WD) - My Cloud EX2 Ultra I bought this originally as 8TB version, but I have since removed the original drives used it with larger capacity drives (8TN). I am selling this without drives so this one comes with 0TB. The good news is that you can add your own bigger drives drives again instead of being stuck with 4TB drives. It works really great and I used it seldomly. I am now looking to get 4 drive bay version for RAID operation. So my loss is your gain. :) 30 days return policy (refund full price minus s/h for whatever reason as long as it is returned in the same condition that I shipped this to you).