Hi miguelpra,
Welcome to forum
The GA-Q67M-D2H-B3 With Bios F5 have a parameter for VT-D. In Chipset Sub-Section Bios.
Otherwise you have :
GA-Q67M-D2H-B3
http://www.gigabyte.com/products/product-page.aspx?pid=3824#ovIn manual page 25, I see :
Intel IGD SWSCI OpRegion
DVMT Mode Select
Selects DVMT Mode used by Internal Graphics Device.
DVMT/FIXED Memory
Selects DVMT/FIXED Mode Memory size used by Internal Graphics Device.
Intel TXT(LT) Configuration
Intel TXT support only can be enabled/disabled if SMX is enabled. VT and VT-d Support must also be enabled prior to TXT.
I don't view setting for SMX (But Support must also be enabled prior to VT and VT-d)
What means SMX? (Safer Mode Extensions, i thiks)
VT and VT-d (Support must also be enabled prior to TXT).
And this mobo have a LAN Intel 82579 chip (10/100/1000 Mbit)
So the most important, is decide what you want make whit is moterboard?
What is the software you want use?
I refer witht this link :
http://forum.giga-byte.co.uk/index.php/topic,6398.msg50250.html#msg50250Gloup_Gloup