Hi,

I have bought the forementioned unit from Amazon.  See Amazon.com: DC Buck Module, DROK Adjustable Buck Converter Step Down Voltage Regulator 6V-32V 30V 24V 12V to 1.5-32V 5V 5A LCD Power Supply Volt Reducer Transformer Module Board with USB Port Protective Case : Electronics

For field assembly of protective covers, the video at the above link shows positioning of the heatsink on the microcontroller.  However, the unit documentation, and droking.com description shows heatsing position on the  power supply ship.

Please identify which is correct, and remove the discrepancy (probably the video is incorrect).

Thanks.