RB 411U

Specifications

CPU Atheros AR7130 300MHz embedded processor
Memory 32MB SDRAM onboard memory chip
Boot loader RouterBOOT
Data storage 64MB onboard NAND memory chip
Ethernet ports One 10/100 Mbit/s Fast Ethernet port supporting Auto-MDI/X
MiniPCI slot One MiniPCI Type IIIA/IIIB slot
One MiniPCIe slot for 3G modem (onboard SIM connector)
Wireless not built in, possible by adding a miniPCI card
Expansion USB 2.0 with 5V 1A supply
Extras Reset switch, Beeper, Input voltage monitor
Serial port One DB9 RS232C asynchronous serial port
LEDs Power, NAND activity, 5 user LEDs
Power options 

Power over Ethernet: 10..28V DC (except power over datalines).
Power jack: 10..28V DC
Power Consumption 3-12W
Temperature Operational: -20°C to +70°C (-4°F to 158°F)
Humidity Operational: 70% relative humidity (non-condensing)
Currently supported OS RouterOS 3.x, Level4 license included