Install OpenWrt on A64+ without serial?

[JuniperFury]

Is there no documentation at OpenWrt about installation to that hardware?  I would consider that the primary source, and Pine64 information (wiki, forums, etc.) to be secondary to that.

Yup, their documentation says exactly the same thing. "Use serial because this is headless image". So my question is since I can't order a serial port connector device, whatever those things are, I had no clue I needed it, is there a way I can make my own, or somehow connect to serial another way without that extra device?

I'd like to reiterate there is a computer store, a ham radio and electronics and hardware store near me, but that's it. Is there some alternative way I can get serial connection? Shipping is not possible at my current location.

Thank you.