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I bought this item Feb 6, 2011. I hooked it up but did not install the powerchute software. The backup unit would randomly shut the computer down. I installed the powerchute 2.1.1 software. When I exectued the self test it crashed the computer causing disk coruption. It took several hours to get the computer operating properly. I downloaded powerchute 3.0 for windows 7 and tried the self test. Once again the computer crashed. After I finally got the computer working again I sent a message to APC support. It has been a week with no response. I have 4 other APC units that are working great. I will not buy another. If support does not care enough to acknowledge my message requesting help, then I will move on to another product.
What's great about it: nothing
What's not so great: did not work and APC did not seem to care