Abit o tom nemlčí,prostě je to chyba ze strany nvidia.

The realtek (or other brand) analog to digital converter chips are required for both MCP2 and MCP2-T southbridges. The MCP2-T does not have the analog-digital converter that is necessary for outputting the actual signal to where you can plug in your speakers/headphones.

Based on all the reviews of the other boards with MCP2 (NON-T) southbridges, the nVidia control panel is not available on those either. So, I'd say there is no problem with Abit on this.....