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2-22 Chapter 2: Hardware information
4. USB device wake-up (3-pin USBPW1-4, USBPW7-10, USBPW1112)
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.
The USBPW1-4 jumper is for the rear USB ports. The USBPW7-10/USBPW1112
jumpers are for the internal USB connectors that you can connect to additional
USB ports.
• 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.
• The total current consumed must NOT exceed the power supply capability
(+5VSB) whether under normal condition or in sleep mode.
3. Keyboard/mouse power (3-pin PS2_USBPW56)
This jumper allows you to enable or disable the keyboard/mouse 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),
clicking the mouse 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 rear USB ports.