Asus P5K SE EPU User Manual - Page 45
Keyboard power 3-pin PS2_USBPW, USB device wake-up 3-pin USBPW1-4, USBPW78, USB9-12
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2. Keyboard power (3-pin PS2_USBPW) This jumper allows you to enable or disable the keyboard and USB port 5-6 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 (the default is the Space Bar) or using a USB device. This feature requires an ATX power supply that can supply at least 1A on the +5VSB lead, and a corresponding setting in the BIOS. The USBPW56 jumper is for the internal USB connectors that you can connect to additional USB ports. PS2_USBPW 12 23 +5V (Default) +5VSB P5K SE/EPU ® P5K SE/EPU Keyboard power 3. USB device wake-up (3-pin USBPW1-4, USBPW78, USB9-12) 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 S3 and S4 sleep modes (no power to CPU, DRAM in slow refresh, power supply in reduced power mode). The USBPW1-4 and USBPW78 jumpers are for the rear USB ports. The USBPW9-12 jumper is for the internal USB connectors that you can connect to additional USB ports. P5K SE/EPU USBPW1-4 USBPW78 ® 3 2 2 1 +5V (Default) +5VSB USBPW9-12 12 23 P5K SE/EPU USB device wake up +5V (Default) +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 would not power up. • The total current consumed must NOT exceed the power supply capability (+5VSB) whether under normal condition or in sleep mode. ASUS P5K SE/EPU 2-23