Asus P4SDX P4SDX English Manual Version E1215 - Page 25
Jumpers - cpu
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1.11 Jumpers 1. USB device wake-up (3-pin USBPWR12, USBPWR34, USBPWR56) Set this jumper to +5V to wake up the computer from S1 sleep mode (CPU stopped, DRAM refreshed, system running in low power mode) using the connected USB devices. Set to +5VSB to wake up from S3 and S4 sleep modes (no power to CPU, DRAM in slow refresh, power supply in reduced power mode). The rear panel USB ports (Ports 1 to 4) do not support device wake-up from S4 sleep mode. USBPWR12 USBPWR34 12 23 P4SDX ® P4SDX USB Device Wake Up +5V (Default) +5VSB USBPWR56 12 23 +5V (Default) +5VSB 2. Keyboard power (3-pin KBPWR) This jumper allows you to enable or disable the keyboard wake-up feature. Set this jumper to pins 2-3 (+5VSB) if you wish to wake up the computer when you press a key on the keyboard (the default value is [Enabled]). This feature requires an ATX power supply that can supply at least 1A on the +5VSB lead and a corresponding setting in the BIOS. (see section 2.5.1 Power Up Control) KBPWR 12 23 +5V P4SDX ® P4SDX Keyboard Power Setting +5VSB (Default) ASUS P4SDX motherboard user guide 1-15