Hi All, I have a Hopper w/Sling and recently ordered the OTA adapter. Haven't had a chance to install it yet but I understand that the box can only handle one USB device at a time, even though there are 2 ports. Do I have to disconnect my EHD in order to add the OTA adapter? What happens if both are connected at the same time? I'd hate to have to keep plugging and unplugging devices whenever I want to use one or the other. Any "best practice" types of suggestions on managing this greatly appreciated. Thanks in advance.