The EXC-664PCIe board is an ARINC-664 test and simulation board designed to help integrate avionics suites, and can simulate up to two End Systems with full dual redundant support for receive and transmit operation. The board also contains room for two standard 4000 modules that can support multiple channels of other avionics communications protocols including MIL-STD-1553, ARINC-429, Serial, Discrete, ARINC-708 and CANbus.