Is it safe to unplug a monitor from an UPS while it's on?

[Noxian]

My monitor connected to an UPS died and I want to replace it, but my PC (connected to the same UPS) is running. I'm wondering if it's safe to unplug the monitor and plug a new one into the UPS while it's on (but not running on battery power). I couldn't find anything about it in the UPS manual so I thought I'd ask here.

 

[DeadRam]

Yes it's safe to unplug/connect a monitor to a PC that is turned on. Touch something metal or the PC case to discharge any static electricity before you do the swap. Don't touch the USB ports or the power button area.

 

[Noxian]

Yes it's safe to unplug/connect a monitor to a PC that is turned on. Touch something metal or the PC case to discharge any static electricity before you do the swap. Don't touch the USB ports or the power button area.

I know that, I was asking if it's safe to plug it to a UPS (uninterruptible power supply) that's turned on and has a turned on PC connected to it.

 

[LinuxDevice]

Normally you'd keep the power switch off on the monitor itself...but the power socket is alive regardless of whether it is on an UPS or a wall or a surge protector. You can plug in a monitor to any power source at any time if it isn't turned on (and if it is turned on probably it won't hurt, but it isn't recommended).

HDMI and DisplayPort are "hot plug". You can unplug and replug those at will (though sometimes an operating system might handle this better than at other times). VGA won't be harmed by unplug/re-plug, but software is not "hot plug" and so whether or not it behaves correctly can't be predicted.