This is a small, fanless (passive cooling) mini PC. Because it makes absolutely no noise, it's ideal for use in bedrooms or quiet environments. Equipped with dual Gigabit LAN, it's an excellent device for use as a software router (OpenWrt, pfSense, etc.), home server, or IoT gateway. Specifications: CPU: Intel Core i3-5010U Memory (RAM): 8GB Storage (SSD): 60GB Network: Gigabit LAN ports x2 (Dual LAN) Cooling Method: Fanless (passive cooling / 0dB, completely silent) OS: None Suggested Uses: Software Router: Build OpenWrt, pfSense, OPNsense, etc. Smart Home: Home Assistant, Homebridge server. File Server: Ultra-compact, energy-efficient NAS. Ad Blocking: Run Pi-hole or AdGuard Home. Condition: This is a used item, so there may be some scratches or marks on the casing. Please check the photos for details. Operation has been confirmed. Includes the main unit and AC adapter. Sold As-Is, No Warranty: This is a used precision instrument and is being sold by an individual. While operation has been confirmed, we cannot provide technical support, warranty, returns, or refunds after shipping (sold as-is). Request for Prior Confirmation: If you have any concerns about the product's condition or specifications, please be sure to ask questions in the comments section before purchasing. We ask that you purchase only after you are fully satisfied.