- I've also seen mention of Servo, but I don't seen any such header on
my board. Looking at a photo of the Acer C720 here, it does look like there's an oblong space with pads there, but that would be a hell of a surface mounting job: https://www.chromium.org/chromium-os/developer-information-for-chrome-os-dev...
Yes, you'll likely not get very far without a serial console, and the only way to get that is with a soldering iron. The good news is that you shouldn't need the full Servo header... just the two AP UART lines is enough (should be pin 16 and 17). You can find the whole Servo pinout at https://www.chromium.org/chromium-os/servo/chromium_os_yoshi_flex.tar.gz