[Namidairo]

The CH341A requires a somewhat large warning on it, given there are still many floating around that'll happily push 5V data lines still when supposedly configured for 3.3V

Later revisions supposedly fixed this, but the reviews on the Amazon link seem to indicate it may be of older stock.

This can be fixed with fairly simple modifications luckily.

[cushychicken]

It's very straightforward to modify to run at 3.3V. There's a few good guides online. It's one cut trace and a short wire tack.