Laptop SIM card slot not recognized

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http://askubuntu.com – My laptop, Lenovo T520 has a Sim Card Slot that can be revealed when removing the battery. I have a 3G USB dongle with a SIM card that works fine, however I would like to take advantage of the built-in SIM slot. Unfortunately when booting up the laptop with the SIM card inserted into the SIM slot it seems like Ubuntu does not recognize the slot itself as my Network Manager makes no mention of a Mobile Broadband connection. Has anybody worked with and resolved something like this in Ubuntu? I've trawled the net a bit for both Ubuntu and *nix solutions but not much comes up. Not sure what out (HowTos)