Using this Gravity 4 - Pin IIC/I2C/UART sensor cable is simple. First, connect the PH2.0 - 4p connector to the appropriate device and the XH2.54 DuPont port to your breadboard. The color - coded design helps you quickly identify the right connections. When using, make sure the voltage doesn't go over 50V and the current stays below 1000mA to avoid damaging the cable. For maintenance, keep the cable in a dry and clean place. If it gets dirty, you can gently wipe it with a soft cloth. Don't bend the cable too sharply as it may break the internal wires.