iMac 5,1 approx 2007.
I tried to plug some speakers in for the first time yesterday, but the standard 3.5mm plug does not want to go all the way in to the socket, and no sound from the socket like that either.
Are the mic and headphone sockets standard 3.5mm stereo or did Apple use something slightly different there?
or is something not quite right?
Exact model: http://everymac.com/systems/apple/imac/specs/imac-core-2-duo-2.0-17-inch-specs.html