Operating System: Linux
Adapter input voltage (optional): AC 100-240V@DC  5V1A
PoE IEEE802.3af
Display screen: 4.3-inch 480x272 pixel display screen
Backlight mode: LCD color backlight
Interface: xRJ9 controller interface; 1xRJ9 headphone interface; 1xRJ12 expansion board interface; 2xRJ45 10/100/1000M Ethernet interface