QNAP TS-251D-2G

TS-251D-2G

CPU

Intel® Celeron® J4025/J4005 dual-core 2.0 GHz processor

CPU Architecture

64-bit x86

Graphic Processors

Intel® HD Graphics 600

Floating Point Unit

ü

Encryption Engine

(AES-NI)

Hardware-accelerated Transcoding

ü

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

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 visithttps://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

ü

M.2 SSD Slot

Optional via a QM2 PCIe adapter

SSD Cache Acceleration Support

ü

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)

ü

Jumbo Frame

ü

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

External Power Adapter, 65W, 100-240V

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

Sound Level

16.7 db(A)

System Warning

Buzzer

Kensington Security Slot