deek robot motor shield how to connect the 12 v

Connect this to Arudino Shield . An external power supply according to the diagram ( attached). Fed 12 volts. After 4 seconds after power Aruduino burned .
We took new Arudino , reconnect Shield . We decided to measure the voltage at the VIN and GND. When connected to the Arduino Schild shows these contacts 5 Art.
Is that the way it should be? It appears when you connect to these contacts 12 volts or more - they get on Arudinu ?