Asus D700-NIB Motherboard DIY Troubleshooting Guide - Page 39
USB Port, Selection, Keyboard Power Settings
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2. USB port selection (3-pin CNRUSB0, CNRUSB1) When set to pins 1-2, these jumpers allow you to activate USB port 3. Setting the jumpers to pins 2-3 activates the CNR slot. Both jumpers are set to pins 1-2 by default. The USB port 2 is always active regardless of the settings of these jumpers. CNRUSB0 CNRUSB1 P4B-M ® P4B-M USB/CNR Selection 12 Use External USB Ports (Default) Figure 2-24 USB Port Selection 23 Use CNR USB 3. Keyboard power (3-pin KBPWR) This jumper allows you to enable or disable the keyboard wake-up feature. Set this jumper to pins 1-2 (+5VSB) if you wish 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 (see section 4.5.1 Power Up Control). The default is setting is on pins 1-2 (+5V). P4B-M KBPWR 2 1 +5V (Default) 3 2 +5VSB ® P4B-M Keyboard Power Setting Figure 2-25 Keyboard Power Settings ASUS P4B-M motherboard user guide 2-19