version 1.3 can`t support Tualatin CPU ( verison 1.5 can ).

The AGP aperture size is defined as 64MB for P6S5AT. The BIOS does support AGP aperture size, but it doesn't allow users to change the size in order to avoid unpredictable problems.

Connect microphone 1, Mic.-P 3 and GND 2. (You need to separate the 3-wire cable when connecting it to the main board), then insert terminator into 'MIC IN' on the back.