Qnap TS-559 Pro II specs

CPU
Intel Atom 1.8GHz Dual-core Processor

DRAM
1GB RAM (Expandable RAM, up to 3GB)

NOTE:
The system memory can be increased to 3GB by installing an additional 1GB/2GB SO-DIMM RAM module.

Flash Memory
512MB DOM

HDD
5 x 3/5" SATA 6Gb/s, SATA 3Gb/s hard drive or 2.5" SATA, SSD hard drive
NOTE:
The system is shipped without HDD.

HDD Tray
5 x Hot-swappable and lockable tray

LAN Port
2 x Gigabit RJ-45 Ethernet port

LED Indicators
Status, LAN, USB, eSATA, Power, HDD 1, HDD 2, HDD 3, HDD 4, HDD 5

USB
2x USB 3.0 port (Front: 1; Back: 1)
4x USB 2.0 port (Back: 4)
Support USB printer, pen drive, USB hub, and USB UPS etc.

eSATA
2 x eSATA port (Back)

Buttons
System: Power button, USB One-Touch-Backup Button, Reset button
LCD panel Mono-LCD display with backlight
Enter button, Select button for configuration

Alarm Buzzer
System warning

Form Factor
Tower

Dimensions
185 (H) x 210.6 (W) x 235.4 (D) mm
7.28 (H) x 8.29 (W) x 9.27 (D) inch

Weight
Net weight: 5.1 kg (11.24 lbs)
Gross weight: 6.5 kg (14.33 lbs)

Sound Level (dB)
w/o HDD installed: 34.3 dB
Stand by: 34.3 dB
In operation: 35.0 dB
(with 5 x 500GB HDD installed)

Power Consumption (W)
Sleep mode: 22W
In Operation: 44W
Power-off (in WOL mode): 1W
(with 500GB HDD installed)

Temperature 0~40˚C

Humidity 0~95% R.H.

Power Supply
Input: 100-240V AC, 50/60Hz, Output: 250W

Secure Design
K-lock security slot for theft prevention

VGA
Reserved VGA interface for maintenance

Fan
1 x quiet cooling fan (12 cm, 12V DC)