Purchased for use with some IP cameras that accept 5V with a 5.5 x 2.1 barrel connector. As I was about to plug it in I decided to test it with the USB tester I have to see how close it is to 5V 2A. God I'm glad - it saved me hundreds of dollars on fried cameras! Turns out it says 5V everywhere, but REALLY outputs 12V! One of mine was also missing a microUSB adapter. Not that it matters as they both appear to be 12v instead of 5v.
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