The most common connectors used in process control applications are D-Subs, Inline, Card Edge and Headers. D-subs feed data from the equipment back to the control panel. Power combo D-subs can also run various peripheral devices while monitoring processes. Inline waterproof connectors are used in process control equipment where connections may be exposed to liquids. Non waterproof Inline connectors can be used as a wire to board connection to handle power and data on peripherals. For example, power pins drive a servo fan and data pins provide feedback on fan speed and circuit continuity. Applications in assembly line automation and robotics can involve a lot of shock and vibration. The secure latching mechanism ensures circuit continuity while providing strong resistance to shock and vibration. Card Edge connectors used in backplanes accept circuit boards. These boards control and monitor various functions of the assembly line equipment. Headers are economical board to board or wire to board interconnects, an alternative to card edge.