The RB493 has nine ethernet ports and three miniPCI slots, it also has a switch chip, so the ethernet ports of your choice can be grouped together to make it act as a switch.
The heart of this device is a new generation Atheros CPU, adding this device to the already successful RB400 product range.
RB493 includes RouterOS - the operating system, which will turn this powerful system into a highly sophisticated router/firewall or bandwidth manager.
One small device - with all the power of RouterOS.
CPU Atheros AR7130 300MHz network processor
Memory 64MB DDR SDRAM onboard memory
Boot loader RouterBOOT
Data storage 64MB onboard NAND memory chip
Ethernet Nine 10/100 Mbit/s Fast Ethernet ports with Auto-MDI/X
miniPCI Three miniPCI slots
Extras Reset switch, Beeper
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
Dimensions 105mm x 160mm, 189 grams
Power consumption ~3W without extension cards, maximum – 12 W
Operating System MikroTik RouterOS v3, Level4 license