SainSmart Genmitsu 4040-PRO CNC Router User Manual page 29

3. Grblcontrol (Candle) Connecting to the Controller
First time use will require you setup the appropriate COM PORT and Baud rate.
Step 1: Software should automatically select the port number.
Step 2: If it does not recognize automatically select the "Baud" drop down menu and select 115200.
Step 3: Click "OK" to save.
27