This is the QNAP 4-Bay short-depth 1U rack-mount NAS, a compact, entry-level rack NAS built around a quad-core 2.0GHz processor with 4GB of RAM (fixed, not user-expandable), aimed at small offices or branch sites that want proper rack-mounted network storage without the space or cost of a larger 8- or 12-bay unit. Its four bays support SATA 6Gb/s drives, and the short-depth 1U chassis is specifically designed to fit shallow rack cabinets where a standard-depth server or NAS simply wouldn't fit, a real consideration for small comms rooms and network cabinets with limited clearance. Networking is handled by dual 2.5GbE LAN ports, giving faster-than-gigabit throughput for a handful of simultaneous users without needing a 10GbE switch upgrade. QNAP's Container Station software is supported, letting administrators run Docker containers directly on the NAS for lightweight self-hosted apps and services alongside standard file sharing, backup and media serving duties. A 100W power supply covers the unit's modest power draw for its class.