Are you sure it is an Intel® 7 Series/C216 Chipset and not an Intel® 8 Series Chipset?
You can use Chipset Software — Utility to Identify Your Intel® Chipset
This is the USB 3.0 driver for Intel® 8 Series Chipset: https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=22824
You can also use the Intel® Driver Update Utility
