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. At a very special price. Specifications 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 slot Three miniPCI slots Serial port One DB9 RS232C asynchronous serial port LEDs Power LED, NAND (Disk Activity) LED and 5x User LEDs Beeper Present Power Power over Ethernet: 10..28V DC (except power over datalines). Power jack: 10..28V DC Dimensions 10.5 cm x 15 cm (4.13 in x 5.91 in) Weight 189 grams Temperature Operational: -20