【Product Description】 Thank you for viewing. This is a 500GB HGST HDD assembled into a USB 3.0 external case. The health status is "Good," with no bad sectors and excellent operation. **Low usage time (1688 hours)**, making this a unit in generally good condition. It has been formatted, so you can use it immediately by simply connecting it to your computer. Furthermore, it has been overwritten three times using the U.S. National Security Agency (NSA) recommended method. 【Specifications】 Manufacturer: HGST (Hitachi Global Storage Technologies) Model: HTS545050A7E680 Capacity: 500GB Rotation Speed: 5400rpm Interface: SATA 6.0Gb/s Connection: USB 3.0 (UASP compatible case) 【Operation/Status Check】 CrystalDiskInfo ・Health Status: Good ・Usage Time: 1688 hours ・Power On Count: 292 times ・Bad Sectors: None HDD Scan ・Full area check performed ・Bad Sector Count: 0 Disk Erasure Utility ・NSA method (random number x2 + zero write) ・Completely erased (approx. 5 hours) 【Benchmark】 CrystalDiskMark Actual Values (USB 3.0 connection) Sequential Read: Approx. 94MB/s Sequential Write: Approx. 93MB/s These are good numbers for a USB 3.0 connection, and the performance is sufficient for backup and data storage purposes. 【Included Items】 ・External HDD case (USB 3.0 compatible) ・USB connection cable ※If you wish, we will include a USB A to USB Type-C adapter. Please let us know via message after purchase. 【Shipping】 Shipping is planned via Click Post (seller pays). We will use cushioning material and waterproof measures, and carefully pack and ship the item. 【Notes】 ・Due to being a used item, there may be some scratches or signs of use on the exterior. ・The described status is based on the confirmation at the time of listing. ・Returns and exchanges are not accepted. ・Immediate purchase is OK, please refrain from price negotiations. 【Recommended Points】 ・HGST 500GB external HDD ・Peace of mind with low usage time ・Health status "Good," no bad sectors ・USB 3.0 (UASP) compatible for high speed and stability ・NSA method data erasure completed