Problem with USB <---> UPS management connection

[tech-lists]

On 07/03/2018 11:55, wishmaster wrote:
> I have changed USB-cables, USB port on the server - without success.
> On another server this problem is absent.

It looks like a broken or shorting connection but you say you've tried
different ports on the machine and changed cables. I dunno, maybe the
usb subsystem/circuitry in that machine is at fault? The way I'd test is
to install a usb card known to be good and test again.
-- 
J.