Problem with USB <---> UPS management connection

[wishmaster]

 --- Original message ---
From: "tech-lists" <tech-lists at zyxst.net>
Date: 7 March 2018, 20:12:13

 
> 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.

3G USB modem is connected in another USB port on this server and works fine. The problem I described was appeared after a new MB had been installed into the server with fresh OS.