See this link [Link: logitech.com] These cables are two sets of 4 cables and will work with the Hub, and you can assign a different port to each DirecTV box.  The problem with not assigning a different command set to each DirecTV box, if you use a DirecTV remote, it will control all 5 at the same time.  It is not hard to change each box to a different command set, there are up to 8 available.  Right now it is not possible to have more than one Hub, per remote.  And if you are using the 7.7 software, once you have changed the command set, in the software, select each DirecTV box, select Settings, then select Confirm IR.  If you are using MyHarmony.com, it is not so easy, you wold have to delete each device, then add it back in with the new command set, the software will ask you to confirm the new device with the changed command set with the changed remote., then you will have to redo each activity.