I don't know what all this talk about wireless adapter is all about. It has nothing to do with that. The vlink is the connection between the northbridge and the southbridge and the speed is the speed at witch they communicate (northbridge to southbridge). Here is a link explaining some of this from via http://www.via.com.tw/en/products/ch...t8237/vmap.jsp
Generally you should just leave this setting alone as the impact on your performance shouldn't change at all and your system won't benefit much from changing this. I have an asrock motherboard aswell and changing the vlink speed to fast renders my board unbootable (my board has no wireless adapter). Anyways. Hope that info helps.