195 MHz CPU, 64 MB DRAM, 512 MB, Extended Temperature CompactRIO Controller (Legacy)—The cRIO‑9004 is a real-time embedded controller ideal for advanced control and monitoring applications. This rugged, fanless controller features a variety of connectivity ports, including one Ethernet and one serial. The cRIO‑9004 does not include integrated C Series I/O module slots, so to use C Series I/O modules, you can combine the cRIO‑9004 with a compatible CompactRIO Chassis.