How can you tell if you have a USB 1.1 port or 2.0 port? My computer was built by my ex-boyfriend about two years ago, and it doesn't say on the computer. The reason I ask is that when I first got my iPod the other day it charged fine, just like the manual said, but ever since then it's not charging when it's plugged in. If I update it, it charges for a minute before it stops. The iPod manual said that this may be due to my USB port not having enough power and to try another on my computer, but the others are having the same results. An iPod that won't charge isn't good for long! Tell me what's up, please?