Asus P4SGX-MX Motherboard DIY Troubleshooting Guide - Page 24

Jumpers - cpu support

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1.11 Jumpers 1. USB device wake-up (3-pin USBPWR_12, USBPWR_34, USBPWR_56) 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 sleep mode (no power to CPU, DRAM in slow refresh, power supply in reduced power mode). Both jumpers are set to pins 1-2 (+5V) by default because not all computers have the appropriate power supply to support this feature. The USBPWR_12 and USBPWR_34 jumpers are for the rear USB ports. The USBPWR_56 jumper is for the internal USB header that you can connect to the front USB ports. 1. This feature requires a power supply that can provide at least 1A on the +5VSB lead when these jumpers are set to +5VSB. Otherwise, the system would not power up. 2. The total current consumed must NOT exceed the power supply capability (+5VSB) whether under normal condition or in sleep mode. USBPWR_34 USBPWR_12 12 23 ® P4SGX-MX P4SGX-MX USB Device Wake Up +5V (Default) +5VSB USBPWR_56 12 23 +5V (Default) +5VSB 1-14 Chapter 1: Product introduction

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1-14
Chapter 1: Product introduction
1.11
Jumpers
1.
USB device wake-up (3-pin USBPWR_12, USBPWR_34, USBPWR_56)
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 sleep mode (no
power to CPU, DRAM in slow refresh, power supply in reduced power mode).
Both jumpers are set to pins 1-2 (+5V) by default because not all computers
have the appropriate power supply to support this feature.
The USBPWR_12 and USBPWR_34 jumpers are for the rear USB ports. The
USBPWR_56 jumper is for the internal USB header that you can connect to
the front USB ports.
1.
This feature requires a power supply that can provide at least 1A on the
+5VSB lead when these jumpers are set to +5VSB. Otherwise, the system
would not power up.
2.
The total current consumed must NOT exceed the power supply capability
(+5VSB) whether under normal condition or in sleep mode.
P4SGX-MX
P4SGX-MX USB Device Wake Up
+5V
(Default)
1
2
+5VSB
3
2
USBPWR_12
USBPWR_34
+5V
(Default)
1
2
+5VSB
3
2
USBPWR_56