The control baord already pre-installed GRBL firmware.
Default baudrate 115200.
Packing list
1 * MKS DLC V2.1 (Without USB Cable)
Name:MKS DLC
Wiring
PINOUT
Size
Firmware download and update
Install LaserGRBL software to PC,upload GRBL firmware to MKS DLC board.
There could be some deviations due to manual measurement or slight color difference owing to photographing condition. Thank you for your understanding. If you do not understand what you can contact customer service at any time, I wish you a happy shopping.