Product Introduction This is a compact, self-built NAS/small server based on the Lenovo ThinkCentre M920x. It features a power-efficient Core i3-9300T (4 cores, 4 threads) with a TDP of 35W and 16GB of memory, supporting a wide range of applications such as NAS construction, PVE virtualization, and Docker environments. Inside, it utilizes a 3D-printed frame capable of housing four 2.5-inch HDDs/SSDs. Furthermore, it incorporates a CX4121 10GbE dual-port card, supporting high-speed 10GbE network communication. This is a versatile server that combines compactness, high performance, and low power consumption. ⸻ Main Specifications • CPU: Intel Core i3-9300T (TDP 35W) • Memory: 16GB DDR4 (2 slots, expandable) • Storage: 2.5-inch SATA HDD/SSD ×4 (internal SATA connection) • M.2 Slots: NVMe ×2 (standard) • Network: CX4121 10GbE dual SFP+ ports (using PCIe conversion board) • Cooling: 4010 fan ×4 (improves internal case airflow) • Power Supply: Genuine AC adapter (quiet and energy-saving) • OS: Not installed (compatible with TrueNAS / PVE / OpenMediaVault / Unraid, etc.) ⸻ Features • Dual M.2 slots (NVMe & SATA compatible) + 4-bay SATA configuration • Supports high-speed network transfer with 10GbE dual-port card • Space-saving with 3D-printed HDD mounting frame • Efficient airflow with 4010 fans ×4 • High expandability despite its compact size • Ideal for 24/7 operation with a low-power CPU ⸻ Usage Examples • Self-built NAS (TrueNAS SCALE / OpenMediaVault) • Proxmox VE virtualization server • 10GbE-compatible file server • Home lab construction with Docker / Nextcloud / HomeAssistant, etc. ⸻ Included Items • Main unit (modified) • Power adapter • CX4121 10GbE card (installed) ※ HDD/SSD/OS are not included. Please prepare them as needed.