What's in the removable cover under my D150?

Hi!
I have my D150 for about a month now and i want to know what's under the thing that can be removed with a simple screwdriver! I know that one is for RAM, one is for the HDD... but what's the third thing for? I didn't open it yet.
Is there a mini PCI-express Port so that you just could easily plug in a Bluetooth card? Or this Broadcom BCM70012 thing??
And is there something inside usually?

 

That is your wifi card.

Some have upgrade to N cards and/or swapped in other pcie half height cards.

 

Thanks for this information!!
I hoped it would be empty and i could easily put in this Broadcom Card or Bluetooth mini PCI-e... but that would mean i lose my Wifi :roll:
Thanks again!

 

Do a search in this forum for your broadcom card and you'll get plenty of info on using it.

There is a second pcie slot, and you can add an internal usb hub for bluetooth, wifi, or lot's of things. Check the hardware hacking forums here for details. Be sure what you are reading is about the D150 and not previous or later models, though I think most info for the D250 applies to the D150.