Indeed, there isn't the USB but i see that there are pins for GPIOs and GND 5V / 3v3 so i believe that soldering pins are Okay to flash after which to power on :-) Here are a few example generated address pairs. You should not use these ones if https://directory-empire.com/listings12710588/the-5-second-trick-for-tron%E9%9D%93%E5%8F%B7