Asus P5B-Plus VISTA Edition P5B-Plus series user's manual - Page 49
USB device wake-up 3-pin USBPW1-4, 3-pin USBPW5-8, Keyboard power 3-pin KBPWR
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2. USB device wake-up (3-pin USBPW1-4, 3-pin USBPW5-8) 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 to +5VSB to wake up from S4 sleep mode (no power to CPU, DRAM in slow refresh, power supply in reduced power mode). ® P5B-PLUS USBPW1-4 2 1 +5V 3 2 +5VSB (Default) USBPW5-8 12 23 +5V (Default) P5B-PLUS USB device wake-up +5VSB • The USB device wake-up feature requires a power supply that can provide 500mA on the +5VSB lead for each USB port; otherwise, the system will not power up. • If you are using Windows® 2000, you need to install Service Pack 4 to wake up the system from S4 sleep mode. • The total current consumed must NOT exceed the power supply capability (+5VSB) whether under normal condition or in sleep mode. 3. 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) to wake up the computer when you press a key on the keyboard (the default is the Space Bar). This feature requires an ATX power supply that can supply at least 1A on the +5VSB lead, and a corresponding setting in the BIOS. ® P5B-PLUS KBPWR 12 23 +5V (Default) +5VSB P5B-PLUS Keyboard power setting ASUS P5B-Plus Series 2-23