I/O virus

[bobbobbob]

Is it possible to infect PC via usb ports or other I/O ports? If attacker dont have acces to OS nor BIOS ? Both password protected.

 

[UsandThem]

This was pretty well explained to you in your other thread:

https://forums.anandtech.com/threads/inside-computer-machine-extra-hardware.2551851/#post-39518094

And the answer is yes. You machine can be compromised in many different ways, including the USB ports.