I have 2 ports on the back of the PC. I freed one because on the front i have a Card reader with a USB, so to save time i usually put my webcam in there, and swap it to put my Digicam in. Now though i have a new GF tablet plugged into it so i put cam in the rear USB but it wont pick the camera up. Is it assigned to the Card reader when I installed it? And if so can i change it? It wont let me re install the cam in the slot in the rear, So confused here.