I seem to be able to get 3 ports supported so far by plugging one cable into the port and a device, then checking it works, then no, then no. If i plug them all in at once it fails ... have not had to try static IP yet.
... yes, thanks it is as you describe above. I solved the problem by turning all connected devices on the network off, then just plugging one device into the switch. This supported the one plugged in device via the switch. I then plugged one more device into the switch and it worked, and i carried on with further devices one at a time and they are all now working. If it is of any consequence, the Superb is connected via port 4 on the back of the SH 3.0 to the switch into port 1 on the switch.
Thanks to everyone that has responded, much appreciated.