The QNAP TS-251 2-bay NAS is a 2-bay Network Attached Storage (NAS) solution designed for home and small office environments. It combines performance, multimedia capability, and scalability with Intel’s quad-core Celeron processor, expandable memory, dual Gigabit Ethernet ports, and HDMI output for direct media playback. Detailed Specifications Processor & Memory CPU: Intel Celeron J1900 Quad-Core (up to 2.42 GHz) Architecture: 64-bit x86 Memory: 2 GB or 8 GB DDR3L SO-DIMM (expandable up to 8 GB) Flash Memory: 512 MB Storage & Drive Bays Drive Bays: 2 × 3.5″/2.5″ SATA 6 Gb/s HDD or SSD Maximum Capacity: Depends on installed drives (supports large-capacity HDDs) Hot-Swappable Drives: Yes Network & Interface LAN Ports: 2 × Gigabit Ethernet RJ-45 USB Ports: 2 × USB 3.0, 2 × USB 2.0 HDMI Output: 1 × HDMI (Full HD 1080p) Buttons: Power, One-Touch Copy LED Indicators: Status, LAN, HDD 1–2 Performance Sequential Read/Write Speed: Up to 225 MB/s (with port trunking) Encryption: AES-256 hardware-accelerated encryption Virtualization Support: VMware, Citrix, Microsoft Hyper-V Expansion & Connectivity Expansion Units: Compatible with UX-500P / UX-800P for capacity increase App Ecosystem: QTS operating system with apps for backup, streaming, and cloud sync Power & Cooling Power Supply: 60 W external adapter Power Consumption: Approx. 18 W (typical operation), 10 W (standby) Cooling: 1 × 70 mm fan (smart temperature control) Environmental Conditions Operating Temperature: 0 °C – 40 °C Humidity: 5% – 95% (non-condensing) Key Features Dual-core Intel processor with AES-NI encryption engine Expandable memory up to 8 GB Dual Gigabit LAN for load balancing and failover 4K-ready HDMI output for multimedia applications Scalable storage via QNAP expansion enclosures Comprehensive backup, virtualization, and remote access tools Meta Description QNAP TS-251 is a 2-bay NAS featuring a quad-core Intel Celeron processor, dual Gigabit LAN, HDMI output, and expandable memory up to 8 GB. Ideal for high-performance storage, multimedia streaming, and secure data backup for homes and small offices. Datasheet
