2nd gen iPod not recognised on iTunes 12.4
Running iMac with OSX El Capitan 10.11.6 and iTunes 12.4.3.1 When I plug in my 2nd gen iPod it does not recognise it. Nothing shows up in iTunes so I can't sync it anymore.
Tried changing computers, cables and USB ports to no avail.
Any suggestions/solutions greatly appreciated.
iMac, OS X El Capitan (10.11.6)