Ok, setting up the PATA2 was a doddle...

plug it in, check my server to find out what ip dhcp assigned then browse http://IPAssignedByDHCP...

Not quite as simple with SPA2102 I'm guessing? 

I plugged the 'internet' side into the switch, I can see from the server that it's been given an IP, but I can't browse its web interface.

I'm sure I'm doing something really dumb here, but thought it might be quicker just to ask.

D