[coreboot] Re: I need you help.

[Merlin Büge]

On Thu, 16 Mar 2023 13:00:29 +0300, Mike Banon wrote:
> There is a batch of black CH341A s which are giving 5V instead of 3.3V
> which is dangerous for flashing - so please try to get a green
>
> CH341A.

I would not count on the color of the PCB and always verify it myself. In SPI,
the CS pin is usually active low and can easily be measured with a DMM while
idle: it should give 3.3 V.

Note that measuring Vcc is not enough, because those faulty CH341As often have
Vcc = 3.3 V and are marketed as 3.3V, but still use 5 V for the logic signals.

Regards,

Merlin Büge