Thank you for viewing. HDD for NAS High-speed 7200rpm type HGST Deskstar NAS HDN726040ALE614 【Specifications】 ・Capacity: 4TB (4000.7 GB) ・Rotation Speed: 7200 RPM ・Interface: SATA 6Gb/s 【Product Condition】 Manufacturing Date: 2017/11 Power-on Count: 38 times Usage Time: 13842 hours *Data erased 【Features (from Catalog)】 This model is designed for NAS (Network Attached Storage). It is a high-speed 7200RPM model, which is rare for NAS HDDs, and the transfer speed is approximately 20% faster than 5400RPM models. It incorporates high-precision rotational vibration (RV) sensors, enhancing durability and reliability in NAS environments where multiple drives operate simultaneously.