13z Wireless N card installed, question about 3rd aerial

I wondered if anyone can confirm something to save me the time of opening the whole back panel up.

Dell offer the Wireless N option so I wondered if the 3rd aerial connection was built in but tucked away if you choose the Wireless G option only so in order to use it I'd have to open the back up to route it into the bay?

I have a 3rd aerial anyway bought from a 3rd party but of course the built in one (if available) would be a better choice for performance.

I have installed the Intel 5300 AGN card which works fine but fluctuates between 80 and 160MBps normally and peaks at 300.

My NC10 used to connect at 300 all the time using the same card.

 

AFAIK the 3rd aerial is already wired up to the laptop, so putting in the N card will make full use of it. The G/B cards just use two of the aerials.

 

The aerial isn't plugged into the 3rd port though hence this thread asking if the 3rd aerial plug is actually tucked away somewhere that I need to free and plug in.

You can't make use of an aerial that isn't plugged in



That's my 3rd party aerial connected in the middle.