【Product Description】 Thank you for viewing. This is a 500GB HGST HDD assembled into a USB 3.0 external enclosure. The health status is "Normal," and there are no bad sectors, so you can use it with confidence. A notable point is that the usage time is very low, making it a unit in good condition. It has been formatted, so it's ready to use immediately upon connection. Furthermore, it has undergone a 3-pass overwrite erasure using the method recommended by the National Security Agency (NSA) of the United States, ensuring data security. 【Specifications】 Manufacturer: HGST Model Number: HTS545050A7E680 Capacity: 500GB Rotation Speed: 5400rpm Connection: USB 3.0 (UASP compatible enclosure) 【Operation Check】 Completely initialized using a disk erasure utility with the NSA method (random numbers x2 + zero write) Confirmed "0" bad sectors with HDD Scan CrystalDiskInfo Health Status: "Normal" Usage Time: 536 hours Power-on Count: 1578 times 【Benchmark】 CrystalDiskMark Actual Results Sequential Read: Approximately 100MB/s Sequential Write: Approximately 99MB/s Stable figures are achieved with a USB 3.0 connection, and the benchmark results are good. 【Included Items】 External HDD enclosure (USB 3.0 compatible) USB connection cable If you wish, we will provide a USB A to C adapter. Please let us know via message after purchase. 【Shipping】 Shipping is planned via Click Post (seller pays). We will carefully package it with waterproof and cushioning materials and ship it promptly. 【Notes】 Due to being a used item, there may be some scratches or signs of use on the exterior. The operating status described is based on the confirmation at the time of listing. Returns and exchanges are not accepted, so please understand. Immediate purchase is welcome. Please refrain from price negotiations. 【Recommended Points】 ・HGST 500GB External HDD ・Very low usage time (536 hours) and in good condition ・Health status "Normal," no bad sectors ・Good benchmark results with USB 3.0 connection ・NSA method erasure ensures safe use