So, i just built my new gaming pc and its motherboard is TUF B450-PRO GAMING and even though im plugging in only my one keyboard in the onboard usb ports it detects them as 2 keyboards and 1 mouse. I tried the keyboard on all my mobo usb ports and i unplugged my pc case usb ports from my motherboard because they were also giving the same problem. I did that because i tried that as a fix but i think it might be my keyboards problem. I cant go to bios settings because i just built my pc and it wont let me go to bios.