My question is the following: I know you've answered this question a thousand times but my Dell Optiplex GX-620 is still sending the message "Usb device can run faster if plugged into a high speed USB port" or something like that. I have not figured out which port is high speed, please help, Thanks in advance.
If you are using a USB1 Thumdrive, Buy a new one as they are very cheap. If the Device is a USB 1 and Not a memory card/thumbdrive - Then you live with it untill you replace it with a usb 2 device (Falls in that sorry charlie catagory).
If You are getting this message when plugging in a USB 2 device, then most likely Your driver is not working properly. May need to update it.