Well, I think I would need Einstein as father to figure out how on Earth it is possible to see what you are seeing! Indeed it seems there is a connection between the 1216H's Com port and the rotator not being initialized, but if the one thing on does is to connect the USB cable, i.e one does not use the Com port, then from the software's point of view nothing happens. In some deeper layer of the CPU there will be more actions than without the cable being connected as USB is doing "idle talk" all the time, but 1216H's software will only react when one opens the Com port.