On Thu, Jan 23, 2020 at 3:46 PM Dennis Dale-Green
> Does the 1.8v adapter board drop into the usb boards chip holder?
Depends on what adapter you're talking about. Those I've seen on
AliExpress and sometimes are being sold together with CH341A as a
bundle, seem to be compatible, but as I've never encountered any 1.8v
parts I didn't have a chance to try yet. Don't throw away a chip yet,
maybe it's still alive.