Memory 256MB SDRAM onboard memory chip Boot loader RouterBOOT, 1Mbit Flash chip Data storage 64MB onboard NAND memory chip Ethernet ports Five 10/100/1000 Mbit/s Gigabit Ethernet port supporting Auto-MDI/X MiniPCI slot None Speaker Mini PC-Speaker Serial ports One DB9 RS232C asynchronous serial port LEDs Power, 1 user LED Power options 9..28V DC - power jack or passive PoE Power Out None Power Consumption 3-4W without extension cards. Maximum – 10W Dimensions 115mm x 90mm (4.53in x 3.54in) Weight 102g (3.6oz) Temperature Operational: -20°C to +70°C (-4°F to 158°F) Humidity Operational: 70% relative humidity (non-condensing) Currently supported OS RouterOS 2.9.x