| RouterBOARD 133 |
| CPU | MIPS32 4Kc, 175MHz embedded |
| Memory | 32/16MB SDRAM |
| Boot loader | RouterBOOT, 1Mbit Flash chip |
| Data storage | 64MB onboard NAND |
| Ethernet ports | Three/One Mbit ethernet ports supporting Auto MDI/X |
| MiniPCI slot | Three/One miniPCI Type IIIA/IIIB slots |
| Speaker | present |
Serial ports
| One DB9 RS232C asynchronous serial port |
| LEDs | Power, User |
| Power options | Power over Ethernet: 16..28V DC (except power over datalines); Power jack: 9..28V DC; Overvoltage protection |
| Power Out | - |
| Power Consumption | - |
| Dimensions | 105mm x 105mm (4.13 in x 4.13 in) |
| Weight | 115/79g |
| Temperature | Operational: -20°C to +70°C (-4°F to 158°F) |
| Humidity | Operational: 70% relative humidity (non-condensing) |
| Supported OS | RouterOS |