yes, it's a newer (supposedly) improved hardware revision of the earlier UT NF4 Sli boards, specifically the SLI-DR. Expert should have an extra sata controller and a few other bells and whistles, a couple capacitors have been added/changed/removed, and it does a little better overclocking TCCD and UCCC ram chips.
fwiw, there have been some running issues with the Expert. imho, I would either spend the extra $100 and get a Venus somehow from overseas, or just go with the Ultra-D.