Instruct: Classify Amazon reviews into positive or negative sentiment
Query: USB didn't work

I was looking forward to getting the transmitter because of the SD port. Well, the SD port was the only thing that was decent about it. It played good but the display did not read "true" ID3 tagging like it was advertised as having. It reads the name of the mp3 file - ONLY.The USB slot did not work at all. I tried a Lexar and a Sony. The lights on the drives lit up but the display on the transmitter did not change and it did not play any music at all.The other bad thing about this is the display does not work (and not supposed to) at all with an mp3 player!If you read the "fine print" - about the display feature, it says "when available". I guess I am expecting too much out of a $50 technical item.I'm sure one day, another company will come up with something like this that will work and advertise everthing accurately without any hidden statements.