To setup WOL, please make sure you have the followings:
1. The NIC must support WOL feature. P4SDA+ is PCI 2.2 compliant. If the card is not PCI2.2 compliant, then it must have a WOL cable to connect to the onboard WOL header. If the card is PCI2.2 compliant, you should not need the WOL cable.
2. The power supply must provide enough 5V standby power.
3. If the NIC card is ok, boot up the system and enter BIOS setup. In Power Management section, set "Wake up on LAN" and " Wake up by PCI card" to Enabled, then save new setting.
4. Make sure that you have the newest LAN driver to support WOL in Windows.