Check BIOS

October 12, 2025

BIOS Configuration tested on ARK-1250

BIOS

Enter BIOS by pressing DELETE key on keyboard.

To exit BIOS, navigate to Save & Exit.

Open Serial Port Console:

Find Serial 2:

Change COM Mode to RS-485:

Check the rest of ports that are enabled.

Check USB ports:

In windows open Device Manager and check if all ports are enabled: