IC3600SSVE1 is a Servo Valve Drive Card and is part of the GE Fanuc Mark I & II gas turbine control systems. A servo valve is an electrically driven valve that responds to an electrical input signal to control the flow of liquids. On the left side of the IC3600SSVE1, there is a metal plate. A huge red light-emitting diode, or LED, is located beneath this. At the bottom of the Drive Card, there are two spherical red components. These components are jacks that can be used to connect to other devices. Three blue potentiometers are located in the center of the Drive Card left edge.