First off, I have 2 usb propellor servo controllers and I have all the drivers installed. The problem I have is whenever I have both of the controllers plugged into the same computer the servos don't seem to respond or move correctly. But once I unplug one of the servo controllers usb cord the other servo controller operates just fine. But my baud rate is set correctly 38400-2400. And I have a 50amp powersupply supplying the servos so I got plenty of current. It has to be a computer problem. But what?