On July 8, 2020 11:39:29 AM EDT, Valeri Galtsev galtsev@kicp.uchicago.edu wrote:
On 2020-07-08 10:23, Leroy Tennison wrote:
I've used one on a Linux laptop, it "just worked" but the OS wasn't
CentOS 7.
It is not clear if you used USB from APC UPS to USB port on the machine
side or USB - to - "serial". USB to USB with standard USB cable will work.
If one uses serial to USB adapter on the machine side (to create serial
port through USB on the machine), then one _has_to_use_ APC cable: as John Pierce just said, it is APC special cable which though has serial connectors on both sides of cable, (and uses serial protocol of communication - this is already what I am saying), it does not resemble
neither serial nor null-modem cables.
Valeri
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I need to connect an older APS UPS unit to a machine running CentOS
- Unfortunately the UPS only has a serial port whereas the computer
does not. I am aware that there are USB-serial adapters but that the hardware or the drivers might fall short of expectations.
Does anyone have positive experience with such an adapter? Or,
conversely, would recommend avoid a particular adapter?
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I believe I mentioned that the UPS has the serial port, the computer thus has USB.