I was just having a look through my pc, trying to understand things and learn more, when I went to Control Panel>Systems>Device Manager, I saw in Portable devices there was a yellow exclammation mark on MTP Device. Firstly, what is a MTP device & why is the exclammation mark there. Can anyone explain to me in English as I'm only a beginner. You must understand I'm over 40 & Blonde! My pc is Intel Pentium 4, Packard BellNEC P480410801. It's Windows XP.