When you plug the Apex into the computer with the special cable. Do you need to have a controller plugged into the Apex as well? I plan to use it to play on my laptop with a Sony Nav and mouse.
Nope, you leave the controller plugged into the apex hub. The transfer cable just replaces your mouse and nav/keyboard.
I wish I could hook up the controller to the PC as well though, that would eliminate the need for the hub on the apex.