Please read the notes regarding the listing in my profile before purchasing. Items will generally be shipped on either Saturday or Sunday. If you need the item urgently, please consult with me in the comments before purchasing! This is a listing for a used, large-capacity 4TB hard disk NAS (Network Attached Storage). It was actually used for about 2 years. ★Key Features!★ ・Internal data has been completely erased, and settings have been initialized! ・NAS that can be used on a network! Can be used as a home server! ・Equipped with a high-performance dual-core CPU and a 2.5GbE port, enabling fast data reading and writing! ・Convenient for replacements, "data copy function" is useful when replacing from an old NAS! ・Remote access function available for free! ・Save on electricity! Power-saving mode & startup schedule settings ★Disadvantages★ ・Although operation checks (power on, HDD status check, file reading and writing from a Windows PC) have been performed before listing, there is no warranty as this is a used product. ・The listing includes only the main unit and power cord; please note that there are no other accessories such as the box, LAN cable, or instruction manual. ・Some knowledge of networking is required for handling. Please refer to the manufacturer's official website manual for handling instructions. ▼Specifications▼ Manufacturer: I-O DATA Model Number: LANDISK HDL-AAX4 CPU: Marvell Armada382 Dual Core 1.33GHz Memory: 512MB Installed HDD: 4TB x1 Capacity: 4TB Wired LAN: 2.5GBASE-T / 1000BASE-T/ 100BASE-TX/ 10BASE-T Interface (USB ports): USB 3.1 Gen 1 (USB 3.0) x1 / USB 2.0 x1 Power Supply: AC100V 50/60Hz Maximum Power Consumption: 38W External Dimensions: Approximately 45 (W) x 139 (D) x 169 (H) mm (excluding protrusions) Official Reference Price: ¥30,470 (excluding tax ¥27,700)