Originally Posted by Trollheart

Assuming you have a Windows and not Mac OS, if you see the device in Device Manager but there's a yellow exclamation mark beside it, like the one to the very left of this image

that means there's something stopping it from working, that it';s conflicting with another device on your computer. So it may show but not be accessible, as it were. Just a point in case you do see it and don't know what it means...