Hello, I bought the “SparkFun Pro nRF52840 Mini - Bluetooth Development Board” and tried to connect it to my laptop (serial communication).
I succeed in connecting this board to my Galaxy S6 (using an android app -nRF connect- however I could not find a way to connect it with my laptop (serial communication).
How can I connect this board to my laptop? I need to check dataflows using a serial monitor. (Putty…)
Do I need to buy a dongle for serial communication between “SparkFun Pro nRF52840 Mini - Bluetooth Development Board” and my laptop?
Thank you very much! 
Jeong Jae Han