Asus M5A78L LE User Manual - Page 30
M5A78L Series Keyboard power setting
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2. USB device wake-up (3-pin USBPW1-4, USBPW5-10) Set these jumpers 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 these jumpers to +5VSB to wake up the compurer from S3 and S4 sleep modes (no power to CPU, DRAM in slow refresh, power supply in reduced power mode). USBPW1-4 12 23 +5V +5VSB (Default) M5A78L Series USBPW5-10 12 23 +5V +5VSB (Default) M5A78L Series USB device wake-up 3. Keyboard power (3-pin KBPWR) This jumper allows you to enable or disable the keyboard wake-up feature. When you set this jumper to pins 2-3 (+5VSB), you can wake up the computer by pressing a key on the keyboard. This feature requires an ATX power supply that can supply at least 1A on the +5VSB lead, and a corresponding setting in the BIOS. KBPWR 12 23 +5V +5VSB (Default) M5A78L Series M5A78L Series Keyboard power setting 1-20 Chapter 1: Product introduction