
I bought this on December 27, 2017. I installed it but like a dummy I didn't test it. When I started using it, the cigarette lighter port worked but the USB port didn't. They were connected in parallel and I double checked the terminal connection, it has power. I was already past my 30 day return period so I emailed Top Quality Store and asked if they thought about what the problem might be. I emailed them on March 29th, they said they would reply within 48 hours. It's April 4th and we haven't heard from them yet. Aside from the USB not working and they haven't contacted me yet, the device is well made and I would recommend it, but just make sure to install and test ahead of time. But don't expect an answer from them. Marine grade dual USB outlet and 12V DC cigarette lighter socket

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