Description
SPECIFICATION
CPU | 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
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
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 |
Hot-swappable | |
M.2 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 (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
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) |
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 (12VDC), 100-240VAC |
Power Consumption: HDD Sleep Mode | 8.08 W |
Power Consumption: Operating Mode, Typical |
15.25 W
Tested with drives fully populated.
|
Fan | 1 x 70mm |
System Warning | Buzzer |
Kensington Security Slot | |
Max. Number of Concurrent Connections (CIFS) - with Max. Memory | 1500 |

QNAP TS-251D-2G 2 BAY NAS Server
₱18,100.00