Qnap TS831X 8bay Network Attached Storage

Processor : AL-314 Quad-core 1.7 GHz Cortex-A15 processor
System Memory : 4GB DDR3 (1 x 4GB), 8GB DDR3 (1 x 8GB), 16GB DDR3 (2 x 8GB)
Maximum Memory : 16GB
Memory Slot : 2 x SODIMM DDR3
Flash : 512MB
Drive Type : 8 x 3.5"/2.5" SATA 6Gb/s HDDs/SSDs
10GbE LAN : 2 x 10 Gigabit SFP+ LAN ports
GbE LAN : 2 x Gigabit RJ45 LAN ports
USB Port : 3 x USB 3.0 ports (Front: 1, Rear:2)
PCIe Slot : 1 x PCIe Gen2 ( x2)
LED : Status/Power, USB, HDD 1-8
Button : Power, USB One-touch-backup, Reset
Security Slot : Kensington security slot
Dimension : 185.2 (H) x 298.2 (W) x 235 (D) mm 7.29 (H) x 11.74 (W) x 9.25 (D) inch
Weight Net: 6.26 kg (13.80 lbs)
Gross : 7.61 kg (16.78 lbs)
Operating Temperature : 0-40°C
Relative Humidity : 5~95% RH non-condensing, wet bulb: 27°C
Noise Level : 20.6 dB (A)
Power Consumption HDD standby: 19.47 W In operation: 46.36 W (with 8 x 1TB HDDs installed)
Power : ATX 250W, 110-240V AC, 50-60Hz, 3.5A
Fan : 2 x 12cm quiet cooling fan (12V DC)