Just found out how to turn off that annoying warning bubble that appears when you put a USB2 device in an USB1 slot, you may have seen it if you have an older computer - "This device will work faster ......"
Here's how, if you want remove it too.
Paste this in
Look for Universal Bus Controllers and click the +
Right click Host Controller and then Properties.
Put a tick in "Don't tell me......." then OK.