External hard drive with USB 3.0 connection, providing 4.0TB of storage and RAID functionality. - Brand: BUFFALO - Model Name: HD-WLU3/R1 - Storage Capacity: 4.0TB - Interface: USB 3.0 - RAID Function: Supported I purchased this a while ago and never used it. It has been stored unused for many years, so I opened it once to confirm its operation before listing it. Other than that, it is an unused item. I plan to ship the item by wrapping the original box directly with bubble wrap. Thank you.