On 07/08/2020 11:58 AM, John Pierce 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. > > I forgot to mention that I do have the serial cable for the APS UPS since the previous computer it supported did have a serial port. Thus, the only issue should be whether to buy a USB-serial adapter for the computer, or a card with a serial port.