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.
Quick Spec
Table 1 shows the quick spec.
|
Product Code |
TS-251D-4G |
|
CPU Model |
Intel Celeron J4025 |
|
CPU Architecture |
64-bit x86 |
|
Graphic Processors |
Intel HD Graphics 600 |
|
Floating Point Unit |
√ |
|
System Memory |
4 GB SO-DIMM DDR4 (1 x 4 GB) |
|
Memory Slot |
2 x SO-DIMM DDR4 |
|
Maximum Memory |
8 GB (2 x 4GB) |
|
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 |
|
HDMI Output |
1, HDMI 2.0 |
Product Details
TS-251D-4G provides these features and benefits:
Compare to Similar Items
Table 2 shows the comparison.
Product Code | TS-251D-4G | |
CPU Model | Intel Celeron J4025 | Intel Celeron J4025 |
CPU Architecture | 64-bit x86 | 64-bit x86 |
Graphic Processors | Intel HD Graphics 600 | Intel HD Graphics 600 |
Floating Point Unit | √ | √ |
System Memory | 4 GB SO-DIMM DDR4 (1 x 4 GB) | 2 GB SO-DIMM DDR4 (1 x 2 GB) |
Memory Slot | 2 x SO-DIMM DDR4 | 2 x SO-DIMM DDR4 |
Maximum Memory | 8 GB (2 x 4GB) | 8 GB (2 x 4GB) |
Drive Bay | 2 x 3.5-inch SATA 6Gb/s, 3Gb/s | 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 | 3.5-inch SATA hard disk drives 2.5-inch SATA hard disk drives 2.5-inch SATA solid state drives |
HDMI Output | 1, HDMI 2.0 | 1, HDMI 2.0 |
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TS-251D-4G Specification
TS-251D-4G Specification |
|
|
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 |
4 GB SO-DIMM DDR4 (1 x 4 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 |
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