Pros: No issues so far with this backup. Adaptive sine wave makes the unit totally silent in battery mode, no annoying buzz and monitor interference as with stepped sine wave backups. This backup is also PFC power supply friendly, and I get 20 minutes run time. It also works well without any software installation, just plug in the USB cable and go. Cons: I had to buy two of these. First one was a dud and wouldn't charge the battery. From what I've read elsehwere online this backup is prone to high DOA rates. This is also the reason I bought from Walmart.com. Returning the DOA to the local Walmart was easy, and overnight shipping was cheap. Note: This price is a little more than I wanted to spend, but it's worth the extra cash. Windows 7 seems to hate two APC backups I bought just over a year ago. Windows 7 refused to run on battery with the APC. It kept setting the Critical Battery Level to 99% and would shut down moments after switching to battery mode. This happened a lot with the poor power at my home. Not with the CyberPower. Therefore, as a technical expert, I cannot recommend APCs for Windows 7, and this is also the cheapest offering I've found for people with PFC power supplies. I would recommend this product, but also caution against the high DOA rate.
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