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Chapter 4: Motherboard information4-6
3. USB device wake-up (3-pin USBPW12, USBPW34)
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).
• 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.
• 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.
2. CPU fan pin selection (3-pin FM_CPU1, FM_CPU2)
These jumpers allow you to connect either a 3-pin or a 4-pin fan cable plug
to the CPU fan connectors (CPU_FAN1, CPU_FAN2). Set these jumpers to
pins 1-2 if you are using a 3-pin fan cable plug, or to pins 2-3 if you are using
a 4-pin plug.
LAN2
®
P5MT Series FM CPU Setting
FM_CPU2
FM_CPU1
1 2 2 3
3-pin fan 4-pin fan
(Default)
2
3
2
1
3-pin fan 4-pin fan
(Default)
LAN2
®
P5MT Series USB device wake-up
USBPW12
(Default)
+5V +5VSB
2 3
1 2
USBPW34
(Default)
+5V +5VSB
2 3
1 2