TS-251+-2G
CPU Intel® Celeron® J1900 4-core/4-thread processor, burst up to 2.42 GHz
CPU Architecture 64-bit x86
Graphic Processors Intel® HD Graphics
Floating Point Unit
Hardware-accelerated Transcoding
System Memory 2 GB SO-DIMM DDR3L
Maximum Memory 8 GB (2 x 4GB)
Memory Slot 2 x SO-DIMM DDR3L
When installing two memory modules, please ensure that they are the same size and ideally use the same type of RAM for both memory slots.
For the information of RAM module installation and compatible NAS models, please refer to the QNAP RAM Module Installation Guide.
Flash Memory 512MB (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
SSD Cache Acceleration Support
Gigabit Ethernet Port (RJ45) 2
Wake on LAN (WOL)
Jumbo Frame
USB 2.0 port 2
USB 3.2 Gen 1 port 2
IR Sensor (RM-IR002 & MCE)
HDMI Output 1, (up to 1080p)
Form Factor Tower
LED Indicators Power/Status, LAN, USB, HDD1-2
Buttons Power, Reset, USB Auto Copy
Dimensions (HxWxD) 168.5 × 102 × 225 mm
Weight (Net) 1.28 kg
Weight (Gross) 2.32 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 60W/65W adapter, 100-240V
Power Consumption: HDD Sleep Mode 10.56 W
Power Consumption: Operating Mode, Typical 18.09 W
Fan 1 x 70mm, 12VDC
System Warning Buzzer
Kensington Security Slot
Max. Number of Concurrent Connections (CIFS) – with Max. Memory 1500
Note: Use only QNAP memory modules to maintain system performance and stability. For NAS devices with more than one memory slot, use QNAP modules with identical specifications.
Warning: Using unsupported modules may degrade performance, cause errors, or prevent the operating system from starting.
* Sound Level Test
Environment: Refer to ISO 7779; Maximum HDD loaded; Bystander Position; Average data from 1 meter in front of operating NAS.
Product images are for illustrative purposes only and may differ from the actual product. Due to differences in monitors, colors of products may also appear different to those shown on the site.
Designs and specifications are subject to change without notice.
