TYPE-C-LCD-1 Test Card: Compatible with all PD protocol chargers and electronic devices. Test your C-data cable: 1. Prepare a PD protocol C-port charger, a C-data cable, and the test card. 2. Connect the C-port of the data cable to the PD charger and the other end to the test card's input port. The screen will light up, displaying the PD charger's voltage after a few seconds. Press the button to cycle through different PD protocol voltages. To view current, connect the test card's USB port to an electronic load or resistor. The display will show the applied voltage and working current. Successful testing indicates a good data line. Supports 20V voltage and 4.3A current. Color: Green Material: PCB Package Contents: 1 x Test Card (other products not included). Note: Light reflection and different displays may cause slight color variations. Allow for a +/- 1-3 cm measurement error.