After I use more and more devices in the car, I had a problem: Where do these devices get all their electricity? \ R \ nI have two 12V cigarette connections, but more than two devices (navigation device, DashCam, mobile phones, PSP, Nintendo ...). Each device has a mini or micro USB port. \ R \ nThus, I realized that I need several USB ports in the vehicle. \ R \ nAfter some search, I found the Blue Sea products with the benefit of: An adapter - Two USB ports. Delivered, shipped quickly and well packaged. \ r \ n \ r \ nReplaced with both the USB adapter and the USB wall outlet. \ r \ n \ r \ n \ r \ n \ r \ n \ r \ n \ r \ n \ nIn my 12V cigarette connections, I have plugged in the adapter. I have installed USB sockets on the one hand at the rear end of my center console, on the other hand in the sky above my rearview mirror. The power supply I got from the 12V cigarette lighter (fuses). \ R \ n \ r \ nInstalling the USB sockets themselves was not a problem. Note installation dimensions. Carefully drill the holes. Tapping the power supply from the cigarette lighter leads. Here is the quality: Stable screwing of the housing, stable power connections. \ R \ n \ r \ n \ r \ nNow, for example, I can supply my DashCam from the USB socket in the sky, Navi through the USB socket from the front panel. Here I also have the advantage that I have no annoying cables in my field of view. Conclusion: The price / performance ratio is good at this quality, the USB ports hold, the power supply is stable.