QNAP NAS TS-351

CPU : Intel® Celeron® J1800 2-core/2-thread processor, burst up to 2.58 GHz
CPU Architecture : 64-bit x86
Graphic Processors : Intel® HD Graphics
Hardware-accelerated Transcoding : up to 1080P
System Memory : 4 GB SODIMM DDR3L (1 x 4 GB)
Maximum Memory : 8 GB (2 x 4 GB)
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.

Flash Memory : 512MB (Dual boot OS protection)
Drive Bay : 3 x 3.5-inch SATA 6Gb/s, 3Gb/s
Bay 1, 2: SATA 3Gbps
Bay 3: SATA 6Gbps

Drive Compatibility :
3.5-inch SATA hard disk drives
2.5-inch SATA hard disk drives
2.5-inch SATA solid state drives
An optional 2.5" drive tray base (TRAY-25-NK-BLK03) is needed to install a 2.5" SSD/HDD

M.2 Slot : 2 x M.2 2280 NVMe 500 MB/s slots

SSD Cache Acceleration Support :
Drive bay 3
M.2 Slots 1 to 2

Gigabit Ethernet Port (RJ45) :1
Wake on LAN (WOL) : Y
Jumbo Frame : Y
USB 2.0 port : 2
USB 3.2 Gen 1 port : 1
HDMI Output : 1, HDMI 1.4a (up to 1080p)
Audio Output : 1 x built-in speaker, 1 x 3.5mm line out jack (for amplifiers or speakers)
Form Factor : Tower
LED Indicators : System Status, LAN, USB, HDD1~3, M.2 SSD1~2
Buttons : Power, Reset, USB Copy
Dimensions (HxWxD) : 142 × 150 × 260.1 mm
Weight (Net) : 1.64 kg
Weight (Gross) : 2.69 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, 100 - 240V
Power Consumption: HDD Sleep Mode 18.56 W
Power Consumption: Operating Mode, Typical 26.22 W
Tested with drives fully populated.
Fan 1 x 90mm, 12VDC
Sound Level 21.8 db(A)
System Warning : Voice prompts or Buzzer
Kensington Security Slot : Y
Max. Number of Concurrent Connections (CIFS) - with Max. Memory : 1500