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I've got a couple of my AC adaptors fail at different times during what I assume were power spikes, while being connected to my UPS. It's a pretty old APC 500 which I use only to back up my router and external hard drive. Though it's couple of years old and I havent changed the battery ever it still gives me around 5 minutes of power so I can shut down everything properly.
First when my router's AC failed I thought it was just faulty, then later when hard drive's AC failed also, I started to think that the problem is the UPS as other AC that were connected directly to the grid stayed fine.
So the question is: should I replace my UPS with a newer one, or is the whole idea of connecting appliances AC adapters to UPS just wrong and it's only for PC ACs.
1Printers are one common high-current draw IT device, that often should not be connected to a UPS, unless the UPS is properly rated for it. – mctylr – 2010-03-22T19:22:57.673
Yes after replacing power adapters both router and HD work fine, though I havent tried the failed ones on other devices. I think I'll replace the UPS then. Just wanted to know that I'm not doing something stupid. Thanks – None – 2009-10-27T19:28:13.383