Which zip file to get Mbox 2 audio driver for win8.1?

I am planning to install my MBox 2 as a USB audio interface in my Windows 8.1 laptop (Protools not installed here).

From the Avid web site, I have downloaded 3 possible zip files of audio drivers:



1) Install_Avid_Mbox_1.1.8.zip

2) PTLE__Audio_Drivers_64bit_v804b_68185b_68185.zip

3) Mbox_2_USB_Family_v90265_Drivers_70922.zip



Which zip file should I open to yield the correct audio driver?



Thanks.