8 AI, 8 AO, 4 DIO, 0 V to 5 V, C Series Multifunction I/O Module – The NI‑9381 is a single, cost-effective module for general-purpose system I/O. The NI‑9381 combines common I/O circuitry into a single module to help system designers fit more functionality into a single system. The analog circuitry on the NI‑9381 is a multiplexed architecture that shares a single timing engine. The maximum sample rate per channel is divided by the number of both analog input and analog output channels in use. The NI‑9381 is supported in only CompactRIO Chassis.