The NI 9694 digital I/O breakout RIO Mezzanine Card (RMC) provides easy access to the 96 3.3 V digital I/O lines from the RMC connector featured on some NI Single-Board RIO devices to enable fast prototyping and development. It offers screw-terminal access to 64 digital I/O lines and thru-hole access to 32 digital I/O lines for soldering custom connectors.