Re: USB-serial adapter for CentOS 7

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On 07/08/2020 02:40 PM, Chris Adams wrote:
> Once upon a time, John Pierce <jhn.pierce@xxxxxxxxx> said:
>> yes, but is it 'basic serial UPS' or is it 'enhanced serial UPS' ?    the
>> former do NOT use the rx/tx data of the serial port at all, they ONLY use
>> the serial port control  signals, and they probably will NOT work with a
>> USB port because they require very specific behavior from those signals at
>> power up and reboot times.
> I've used various serial devices, including UPSes, via various
> USB-to-serial adapters (Prolific PL2303 and FTDI FT2232C), and all the
> signaling works fine.  Only issue you sometimes have is that there are
> many cheap adapters on Amazon that claim to be Prolific or FTDI but are
> in fact counterfeit clones - those may or may not work reliably for ANY
> purpose.
>
That's the issue but I will stay with a brand-name unit.

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