The RB493G has nine Gigabit ethernet ports, three miniPCI slots, and a switch chip, so the ethernet ports of your choice can be grouped together to make it act as a switch.
The RB493G also has a USB 2.0 port and a microSD card slot for adding more storage or a 3G USB modem for backup connectivity.
The heart of this device is a high performance Atheros AR7161 CPU and it features 256MB of built in RAM. RB493G includes RouterOS - the operating system, which will turn this powerful system into a highly sophisticated router, firewall or bandwidth manager.
* (needs power adapter, available separately)
Product code RB/493G
CPU speed 680Mhz
RAM 256MB
Architecture MIPS-BE
LAN ports 9
Gigabit yes, all 9
MiniPCI 3
USB 1, external power required
Power Jack 10..28v
PoE over Datalines no
PoE 10..28V DC
Voltage Monitor No
Dimensions 105mm x 160mm
Operating System RouterOS
Temperature range -30C +60C
RouterOS License L5