Serveur NAS QNAP TS-251B-2G 2 Baie
Fiche Technique
| CPU | Intel® Celeron® J3355 2-core 2.0 GHz processor (burst up to 2.5 GHz) | 
| CPU Architecture | 64-bit x86 | 
| Graphic Processors | Intel® HD Graphics 500 | 
| Encryption Engine | (AES-NI) | 
| System Memory | 2 Go SO-DIMM DDR3L (1 x 2 Go) | 
| Maximum Memory | 8 Go (2 x 4Go) | 
| Memory Slot | 2 x SO-DIMM DDR3L For dual-DIMM configuration, you must use a pair of identical DDR3L modules. | 
| Flash Memory | 4Go (Dual boot OS protection) | 
| Drive Bay | 2 x 3.5-inch SATA 6Gb/s, 3Gb/s The system is shipped without HDD. For the HDD compatibility list, please visit https://www.qnap.com/compatibility/ | 
| Drive Compatibility | 3.5-inch SATA hard disk drives 2.5-inch SATA hard disk drives 2.5-inch SATA solid state drives | 
| M.2 Slot | Optional via a PCIe adapter | 
| Gigabit Ethernet Port (RJ45) | 1 Expandable with an optional PCIe adapter | 
| 10 Gigabit Ethernet Port | Optional via PCIe expansion card | 
| PCIe Slot | 1 Slot 1: PCIe Gen 2 x2 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 | (RM-IR004) | 
| HDMI Output | 1, HDMI 1.4b (up to 3840 x 2160 @ 30Hz) | 
| Audio Input | 2 x 3.5mm dynamic microphone input jacks | 
| Audio Output | 1 x built-in speaker, 1 x 3.5mm line out jack (for amplifier or headphone amplifier) | 
| Form Factor | Tower | 
| LED Indicators | Power/Status, LAN, USB, HDD1-2 | 
| Buttons | Power, USB copy, Reset | 
| Dimensions (HxWxD) | 168 × 105 × 226 mm | 
| Weight (Net) | 1.53 kg | 
| Weight (Gross) | 2,63 kg | 
| Operating temperature | 0 - 40 °C (32°F - 104°F) | 
| Storage Temperature | -20 - 70°C (-4°F - 158°F) | 
| Relative Humidity | 5-95% RH non-condensing, wet bulb: 27˚C (80.6˚F) | 
| Power Supply Unit | 65W adapter, 100-240V | 
| Power Consumption: HDD Sleep Mode | 8.08 W | 
| Power Consumption: Operating Mode, Typical | 15.25 W | 
| Fan | 1 x 70mm, 12VDC | 
| Sound Level | 16.7 db(A) | 
| System Warning | Buzzer | 
| Max. Number of Concurrent Connections (CIFS) - with | 1500 | 
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