Will power interruptions cause iMac usb ports to fail?

When electrical power is disrupted and subsequently restored can iMac on board USB ports be damaged to the point of total failure? If so, how can these
ports be properly protected? Thanks for any advice.

APC is the big name. You can find them at all sorts of places. They make quite a few models.  If you live someplace where power failure is common it's probably best to shut down before leaving but assuming your home, if your battery backup is good for 10-20min tha'ts plenty of time to shut down. I have my computer and external drives on battery backup. My second monitor, printer and such are simply on surge protector circuits. Most UPS units have some plugs that are just surge and other plugs that include battery backup. You will want to find out how many watts your computer uses and any other peripherals you use to guage which battery backup system you need to provide as many minutes of backup as you want.

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