MikroTIk RB435G, Customizable RouterBoard with (5)miniPCI slots (3)Gigabit RJ45 Ethernet ports (2)USB 2.0 ports (1)RS232 Serial Port. 680MHz Atheros CPU AR7161-BC1A, 256 MB RAM, Five miniPCI slots can be used for four sectors and a backbone. USB 2.0 ports can be used for storage or adding a USB 3G wireless modem. includes Router OS Lvl 5, Supports 8-28V input voltage. Can be powered by passive PoE in 24V. Dimension 105mm x 154mm. R52 mini PCI cards sold seperate. Options not included Passive 24V PoE Injector MIK-HS24-2400, MIK-HC24-2400 Power Adapter MIK-24POW, MIK-24HPOW Wireless PCI Cards R52H, R52HN, R52NM Indoor Case MIK-CA435