QNAP TS 251D 2 Bay NAS Storage
- CPU: Intel Celeron J4005 dual core 2.0 GHz processor (burst up to 2.7 GHz)
- CPU Architecture: 64 bit x86
- Graphic Processors: Intel HD Graphics 600
- Floating Point Unit: Yes
- Encryption Engine: (AES-NI)
- Hardware accelerated Transcoding: Yes
- System Memory: 4GB SO-DIMM DDR4 (1 x 4 GB)
- Maximum Memory: 8GB (2 x 4GB)
- Memory Slot: 2 x SO-DIMM DDR4
- For dual DIMM configuration, you must use a pair of identical DDR4 modules
- Flash Memory: 4GB (Dual boot OS protection)
- Drive Bay: 2 x 3.5 inch SATA 6Gb/s, 3Gb/s
- Drive Compatibility
- 3.5 inch SATA hard disk drives
- 2.5 inch SATA hard disk drives
- 2.5 inch SATA solid state drives
- Hot swappable
- M.2 SSD Slot: Optional via a QM2 PCIe adapter
- SSD Cache Acceleration Support
- Gigabit Ethernet Port (RJ45): 1 (Expandable with an optional PCIe adapter)
- 5 Gigabit Ethernet Port: Expandable with an optional PCIe adapter
- 10 Gigabit Ethernet Port: Expandable with an optional PCIe adapter
- Jumbo Frame: Yes
- PCIe Slot: 1(Slot 1: PCIe Gen 2 x4)
- PCIe bandwidth limitations will restrict the NAS 10GbE performance
- USB 2.0 port: 3
- USB 3.2 Gen 1 port: 2
- USB 3.2 Gen 2 (10Gbps) Port: Optional via a PCIe expansion card
- IR Sensor: (Optional QNAP RM IR004 remote control)
- HDMI Output: 1, HDMI 2.0
- Form Factor: Tower
- LED Indicators: Power/Status, LAN, USB, HDD1-2
- Buttons: Power, USB copy, Reset
- Dimensions (HxWxD): 168 × 105 × 226 mm
- Weight (Net): 1.48 kg
- Weight (Gross): 2.58 kg
- Operating temperature: 0 - 40 °C (32°F - 104°F)
- Relative Humidity: 5-95% RH non-condensing, wet bulb: 27?C (80.6?F)
- Power Supply Unit: External Power Adapter, 65W, 100-240V
- Power Consumption: HDD Sleep Mode: 8.08 W
- Power Consumption: Operating Mode, Typical 15.25 W
- Fan: 1 x 70mm
- Sound Level : 16.7 db(A)
- System Warning: Buzzer
- Kensington Security Slot: Yes
- Max Number of Concurrent Connections (CIFS): 800
