> On Jul 8, 2020, at 10:58 AM, John Pierce <jhn.pierce at gmail.com> wrote: > > On Wed, Jul 8, 2020 at 8:46 AM H <agents at meddatainc.com> 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 > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos