@john
If you take a look at the pics you can see the aerial setup of the old atheros and intel card basically on the atheros you have two wires, the blackgoes to main the white to aux, on the intel the black goes to 1 and the white to 2. the third aerial goes in the middle no3. The connector is called a ufl (dont ask lol) and just pushes on.
if you search for internal laptop wifi aerial you may get lucky but really oxfordtec tend to be the best imho.
Range was good as i got 5 bars as in the pics at the end of the garden through 2/3 solid walls.