PCwill not recognize imp and flash drive? What do I need to do?

Hi,

          Follow the steps to transfer the file from the iPad to the iXpand :
1.Connect the iXpand Flash Drive to your iPhone/iPad.

2.Selectthe add file button “+”.

3.When prompted to “Select& Add photos or videos to the drive”,choose the photos and videos you want to transfer from iPhone/iPad to the drive.
4“.Select Destination” to specify where to store the photos and videos on your drive.

and then

        Follow the steps to transfer files between PC and drive

1.Simply plug the iXpand Flash Drive into your computer’s USB port.
2.In the AutoPlay window, click Open folder to view files.
3.Drag and drop music, videos, photos, and documents between your computer and
the iXpand Flash Drive window.

Also
iXpand works with iPhone5, iPhone 5C, iPhone 5S, iPhone 6, iPhone 6 Plus, iPad Air ™, iPad mini ™, iPad
with Retina display and newer (iOS 7.1+)

Supported OS
Windows vista®, Windows 7, Windows 8, Mac OS X v10.6+