I think that one you are putting the arrow on in your pic is the input not the headphones.Update: Two things...
Like I mentioned earlier in the thread I can call Charlie on Monday, but would you switch the wires in the housing on the board since it's easier to access?
- Fan was thankfully NOT attached to the lid.
- That wire housing is a bit smaller than I pictured in my head.
Good eye; the arrow is pointing to a "Front Panel Input" label. Have a look at the molex connector that's northeast of where you're looking - it's the other gray wire coming from the front. The front panel input is the lower of the jacks. The headphone out is the top jack, and that gray wire is leading to the other molex connector.