After realizing that my Black CH341a was not working as intended while flashing my x230 with Coreboot, (it was sending 5V to the signal outputs instead of 3.3V) I decided to attempt the fix I found online. It went well and only took about 15 minutes. All that is required is a decent soldering iron, a couple of hand tools, some small wire and a good amount of patience.
I am an amateur electronics hobbyist. I like to think that I am fairly good at following directions, researching information and using common sense. Please, if you are not sure about how or why to do something, look it up online or have someone do the work for you! You risk damaging your equipment and/or possibly harming yourself.
We need to lift pin 28 (VCC) to break it’s 5V feed and connect it to capacitor C4 (which also connects to pin 9 (V3)). Then connect that to the middle pin on the AMS 1117 (V out). Doing so results in feeding pin 28 of the CH341A with 3.3V from the output of the AMS1117 voltage regulator chip.
Take out your multi meter and verify voltage. You should now have 3.3V to all pins.