12TB WD Red HDD, 5400 RPM, designed for NAS. ・Designed for 1-8 bay NAS systems intended for 24/7 continuous operation and RAID configurations. ※When using with products equipped with RAID functions, please use products of the same model number. ・Hardware-level optimization for heat, vibration, and shock resistance. ・Equipped with "NASware 3.0" to optimize the balance of performance and reliability in NAS and RAID environments. ・Equipped with "3D Active Balance Plus" to protect data from vibration and noise in NAS and RAID environments. Thank you for viewing. [Product Condition] This is a used product. It is a working product removed from a PC. A simple check (recognition/read-write) was performed before listing, and it was confirmed to work without problems. ※Please note that this is a used product, so there may be minor scratches and signs of use. [Notes] ・Detailed SMART information check has not been performed. ・Please understand the risks inherent in used HDDs, such as sudden failure, before purchasing. ・Please refrain from purchasing if you are overly concerned about minor details. [Shipping Method] It will be securely packaged with an anti-static bag and cushioning material, and shipped via anonymous delivery. [Other] Please feel free to ask any questions in the comments section.