ASRock K7S41 [26/31] Pci latency timer pci clocks the default is 32 it is recommended to keep the default value unless the installed pci expansion cards specifications require other settings primary graphics adapter if both agpcard and pci graphics card are installed on the mother board you may use this option to select pci or agp as the primary graphics adapter agp data rate the default setting is auto you may select between 8x or 4x for an agp 3 card or select among 4x 2x 1x for an agp 2 card agp fast write this allows you to enable or disable the feature of agp fast write protocol support