I am selling this because I replaced it. I purchased it in April 2016 and used it until September 2025. In June 2018, one of the HDDs had an error, so I had it repaired (replaced) by the manufacturer. After writing dummy data, I initialized it with NAS Navigator2 just in case. I've attached a web screen capture when the power and network are connected. I only vacuumed the areas that were visible. The accessories are as shown in the photos: power cord, key, manual, and purchase documents with personal information blacked out. - Model: TS3400D - Disk configuration: 1TB disk x 4 - Size: Width 170 x Height 215 x Depth 230 mm - Weight: Approximately 8kg [I will use Eco-Mercari delivery, so please be aware if you are in a hurry.] Thank you for looking.