Hi, just a little thing that I found during update BIOS firmware to version U1H. 
Motherboard:  Gigabyte GA-Z68X-UD3H-B3-rev1.3  
If you check "Enable" for the Intel Smart Connection Technology in the BIOS, you will find under Control Panel \ Device Manager an Unknown port with hardware ID: ACP\INT33A0.  It is actually the port for Intel Smart Connection Technology.  To update driver, you need to go to Intel.com website and find driver for it.  For me, it is a file: ISCT_3.0_Win7_PV.zip.  After download, un-zip the file and run installation for it.  It should fix the problem.