Yes the ET dual port server adapter does support PXE 2.1 and you can download the Boot Agent here -
I have another query regarding PXE boot.
Does PXE boot is supported over VF of Intel gigabit ET dual port server adapter ?
Thanks & Regards,
I see that you have already asked a very similar question on this thread -
Mark H suggested that maybe the Xen* community might be a place where you could pursue support for this type of query and as this is the desktop boards discussion page, you may find that your post may be read by more people if it was placed in the General Discussion pages here -
Sorry I am not an expert on NICs !