My friend just finished building his first computer and I went over to check it out. I wanted to charge my mp3 player and since it charged by USB, I wanted to plug it into his new computer...so I did. After a few minutes, I went to check it and it was burning hot. I took it off immediately and tried to cool it down but it was just really really hot. It didn't turn on after that. It's a Zen Micro by the way. Being his first built computer I opened it up and found out that he connected USB 2.0 wires for the front into USB 1.1 pins in the mobo. Is my mp3 broken?