I recently bought a USB 3 Areca 4 bay hard drive raid, to connect to my Mac Pro 4,1. To get the best performance I also bought a Caldigit USB 3 pci card. I installed the card and connected the raid unit. The setup works well and gets decent speed. HOWEVER, ever since then I've notice my Apple Magic mouse and keyboard have become sluggish and unresponsive. I believe the problem is that USB 3 can operate at a similar frequency to bluetooth. Has anyone else had this problem and if so, do you have a solution?