Dell printer driver question

I need to install a driver for Dell's 2150cdn printer on a network. I went to Dell's site to find the driver.
 Dell Driver categories
So I expand the "Application" and "Drivers for OS Deployment" categories:
 Dell driver choices
Now I'm confused. I seem to have 3 different choices for drivers.
Which do I use?
What are the differences between these 3?
What the heck is an XPS driver?
The item under "Application" is also a driver, so shouldn't it be listed under "Drivers for OS Deployment" instead? Why is Dell listing it as an "Application"?

P.S. This is the first time I'm trying to embed images. It doesn't look like it worked (at least from my end). If so I've also attached   screenshots of the two images I tried to embed.
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The first one is the complete driver, along with scanner driver and printer software etc. That's the one you should use.

The deployment packages are just the drivers alone with no software and are usually used in companies.

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Printers and Scanners

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