Re: USB-serial adapter for CentOS 7

[Valeri Galtsev <galtsev@xxxxxxxxxxxxxxxxx>]

> On Jul 8, 2020, at 10:58 AM, John Pierce <jhn.pierce@xxxxxxxxx> wrote:
> 
> On Wed, Jul 8, 2020 at 8:46 AM H <agents@xxxxxxxxxxxxxx> wrote:
> 
>> 
>> I believe I mentioned that the UPS has the serial port, the computer thus
>> has USB.
>> 
>> 
> 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.
> 
> the latter DO use the serial data, and may work with USB serial.
> 
> 

John as always has the deepest insight (why I’m not surprised). Thanks !

Valeri

> -- 
> -john r pierce
>  recycling used bits in santa cruz
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