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2-24 Chapter 2: Hardware information
2. USB device wake-up (3-pin USBPW1-4, 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 S3 and S4 sleep
modes.
The USBPW1-4 jumpers are for the rear USB ports. The USBPW5-8 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 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 500 mA on the +5VSB lead, and a
corresponding setting in the BIOS.
P5N-D
®
P5N-D USB device wake up
USBPW5-8
+5V
(Default)
+5VSB
1 2 2 3
+5V
(Default)
+5VSB
USBPW1-4
2
1
3
2
P5N-D
®
P5N-D Keyboard power setting
+5V
(Default)
+5VSB
KBPWR
2
1
3
2