Indeed, there isn't the USB but i see that there are pins for GPIOs and GND 5V / 3v3 so i believe soldering pins are ok to flash then to ability on :-) Once again, most wallets now use BIP32 that's a Hierarchal Deterministic (High definition) wallet that takes advantage https://directory-blu.com/listings215640/helping-the-others-realize-the-advantages-of-tron-generate-address