Bests & Worsts Reviews from Amazon

I wrote a negative review on this product and, after further testing, realized that it's NOT the POWRUI unit, it was the USB cord. But in a weird way. When I plugged a non-working iPhone charger cord into one of the USB ports, for some reason the OTHER THREE USB ports stopped working. When I used a working iPhone charger cord into one of the USB ports (and it worked), the other three ports still work! Lesson: Check your USB charger cord first!!! And check it again before writing an incorrect negative review! By the way, the reason I even rechecked the unit is because I got a very nice email from Vicky, a customer support person at POWRUI who wanted to replace my unit free of charge. I apologize to the folks at POWRUI with my previous inaccurate review. Since this unit DOES work (now after a year) and because of the incredible customer service they have, I STRONGLY RECOMMEND buying a POWRUI anything!