Thank you for viewing. This is an external hard drive 3TB model "HDJA-UT3.0W" from I-O DATA. 【Main Advantages of This Item】 This unit uses a NAS-grade HDD "Western Digital Red (WD30EFRX)" known for its high durability and reliability as its built-in disk. Furthermore, the usage time is only 66 hours, making it almost like new. ■Product Condition Model Number: HDJA-UT3.0W Internal HDD: Western Digital Red (WD30EFRX) 3TB Health Status: "Normal" according to CrystalDiskInfo. Usage time: 66 hours, Power-on count: 77 times. (See images) Appearance: There are minor scratches from normal use, but no noticeable large scratches or cracks. Functionality: Equipped with a cooling fan on the back, designed to prevent overheating even during prolonged use. Power-linked function available. ■Data Erasure and Initialization (Peace of Mind and Safety) For this listing, I have performed a complete data erasure by writing zeros to the entire area (diskpart clean all) to prevent data recovery. After that, it has been formatted in GPT format and NTFS on Windows 11, so it will be recognized immediately and ready to use when connected to your computer. ■Accessories (All items shown in the photos) Main unit AC adapter USB 3.0 cable *Original box and instruction manual are not included. ■Shipping Will be carefully packaged with bubble wrap and shipped via Rakuraku Mercari delivery. I believe that WD Red-equipped models with such low usage time are rare. Please consider this for backups or TV recording.