Load Mass Storage Drivers

I have a brand new Precision Tower T-3620. I want to manually load the O/S. In doing so, I am presented with the portion of the install where it says "Where do you want to install Windows". 

Well, this computer has a 256 GB SSD which needs drivers to be 'loaded' in order for Windows to install there. When I navigate to the folder that has the driver, my UI appears to have found a proper one and the window states I am about to load driver for " Intel chipset SATA RAID Controller at a path of: path\....iaStorAC.inf

But when I "Next" thru, the 256GB SSD drive does not appear for me to select to install Windows on.

And when I go to Dell site for latest drivers, the only drivers I see are for Serial ATA (1. Intel Rapid Storage Tech Driver and Mgmnt Console 2. Intel Rapid Storage Tech F6 Driver. But these are .exe files. And I need extracted files to load the drivers.

Question:

Where do I get the drivers to load mass storage device as a part of Windows O/S load?