Hi P1LTS,
Thanks for posting the screenshot. It confirms what I hoped you meant in your earlier post - that there were only 3 USB devices on the Home Screen. The Configure Screen should list 4 x USB Ports.
The 3rd ‘device’ listed in the Home Screen is the Linux USB Ccontroller (part of the Raspberry Pi setup). There is no ‘easy’ way to link the list on the Home Screen to the actual ports except by recognising the devices themselves. FYI the GPS is the one which doesn’t have any cable attached, and will be in Port 3 to keep its inbuilt antenna (the square bit you can see) in the clear up at the top of the unit. Frankly, being able to tell which device on the Home Screen is in which port generally doesn’t matter, except in the case of specialist kit like the USB/RS232 cable which requires the port to be programmed to suit. The rest should normally be left on their default ‘Auto’ settings.
With the Ethernet port on the left hand side, the USB ports themselves are numbered....
Ethernet. Port 1 Port 3
Port 2. Port 4
Hence the one in the ‘middle’ of the bottom row is ‘Port 2’.
Regards
Peter