[CentOS] USB-serial adapter for CentOS 7

Wed Jul 8 15:39:29 UTC 2020
Valeri Galtsev <galtsev at kicp.uchicago.edu>


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 7. 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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-- 
++++++++++++++++++++++++++++++++++++++++
Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247
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