This TS-420 has been well cared for. It has 4 4TB hard drives, 3 Seagate, and one HGST drive for a total of a 16TB capacity. The drive smart status is good for all 4 hard drives. We have been using dual 1GB LAN Link Aggregation as our router supports it. The firmware is current, and you will receive the NAS with all the data removed and the system restored to a new state.
It will be well packaged also. I have had it configured with raid 10, and with 16TB of disk's I have a little over 11TB usable storage. My scenario is only one way of configuring this NAS. QNAP has a good bit of detail about this on their website at the following link.Please let us know if you have any questions. This item is in the category "Computers/Tablets & Networking\Drives, Storage & Blank Media\Hard Drives (HDD, SSD & NAS)\Network Attached Storage". The seller is "jrvmotorsports" and is located in this country: US. This item can be shipped to United States.