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Zortex Computer teams stand ready to help enterprises solve complex technology challenges.
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The QNAP TS-251D is an entry-level 2-bay NAS that targets home users looking to set up a multimedia entertainment solution (4K media transcoding and streaming) and those who just need a device to secure their data via their own personal cloud. Released back in January, the QNAP NAS comes in two models: TS-251D-4G and TS-251D-2G. Though the 2G ships with 2GB of RAM and the 4G with 4GB, they both can be expanded to a maximum of 8GB using the two DIMM slots.
CUP |
Intel® Celeron® J4025/J4005 2-core/2-thread processor, burst up to 2.9/2.7 GHz |
CPU Architecture |
64-bit x86 |
Graphic Processors |
Intel HD Graphics 600 |
Floating Point Unit |
√ |
Encryption Engine |
√(AES-NI) |
Hardware-accelerated Transcoding |
√ |
System Memory |
2 GB SO-DIMM DDR4 (1 x 2 GB) |
Maximum Memory |
8 GB (2 x 4GB) |
Memory Slot |
2 x SO-DIMM DDR4 |
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 Slot |
Optional via a QM2 PCIe adapter |
SSD Cache Acceleration Support |
√ |
Gigabit Ethernet Port (RJ45) |
1 |
5 Gigabit Ethernet Port (5G/2.5G/1G/100M) |
Expandable with an optional PCIe adapter |
10 Gigabit Ethernet Port |
Expandable with an optional PCIe adapter |
Wake on LAN (WOL) |
√ |
Jumbo Frame |
√ |
PCIe Slot |
1 Slot 1: PCIe Gen 2 x4 |
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 |
√ |
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 |
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 |
External Power Adapter, 65W, 100-240 V |
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 |
√ |
Max. Number of Concurrent Connections (CIFS) - with Max. Memory |
1500 |
Zortex Computer teams stand ready to help enterprises solve complex technology challenges.
All deployed systems follow our standard ISO 9001 procedure and go through rigorous quality testing to ensure high field rates.
Our team of engineers will take a structured planned approach specific to your business needs and design a solution based on your infrastructure requirements and goals.
Our team of engineers and project managers collaborate with our clients to deliver the results you need.
We deploy our solutions to over 30 countries worldwide.
Free delivery all over India
All transactions are securely handled.
If the product is faulty, call within 72 hours of delivery to request a return.
We have a support staff on duty.