Have this charger bought for my MP3 player, I naturally thought it was stupid, that you can only load them via USB. Looking for a matching I'm on this encountered here at Amazon. Unlike many other USB chargers there is no positive or negative list of devices that can be loaded. Since I took the good and to the still of overcharge protection and short circuit protection has been talk, I slammed. I have charged both my players and my navigation and it worked perfectly. So I am happy and glad that I bought a brand charger. Although it is slightly more expensive but this chic and practical! Unfortunately, I no longer have the USB devices it is important to shop but still my recommendation "buy".