Hello,
All you needed to do was go to Dell.com and login to your account. From there put in your Service Tag info and that will bring up your machine. From there click the Drivers & Downlaods to get to the page with the info you need.
Dell - Search - All Dell.com
Now find all the devices you are missing in the list on the left and then find the most recent downloads on the right and install them.
Cheers,
Mak