Hi,
I have an Back-UPS RS 1500 FW:8.g8 .D USB FW:g8, connected to PC via original UPS->USB cable and it is giving ALLWAYS on-line=no , how to resolve this??? here is the resilt of /system ups print :
Flags: X - disabled, I - invalid
0 name=“ups1” port=usb1 offline-time=10m min-runtime=never
alarm-setting=low-battery model=“Back-UPS RS 1500 FW:8.g8 .D USB FW:g8”
serial=“JB0420028329” manufacture-date=“2004-05-13”
nominal-battery-voltage=24V
Please help…
BR
It is possible you are using an older version of RouterOS. Check it 
What’s new in 2.9.28:
*) fixed min-runtime and on-line for APC USB UPS;
Greetings
Hi,
I am using 2.9.38…
BR
How did you get USB to work? In my x86 ROS boxes, the USB ports don’t show up at all.
To answer my own question, I was looking in the wrong place. I was looking under the “Ports” button in Winbox, and only seeing Serial0.
When I went into the UPS area, and added a new UPS there was a “usb1” item in the port dropdown for the UPS, selecting that my UPS showed up and has all of the expected data!
My UPS is identified by MT as Back-UPS ES 500 FW:2.e2.D USB FW:e2
ROS revision is 2.9.38