Asus P4V8X-MX Motherboard DIY Troubleshooting Guide - Page 25

PS2/USB Device Wake-up 3-pin PS2USBPW - very slow

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2. PS2/USB Device Wake-up (3-pin PS2USBPW) This jumper allows you to enable or disable the USB/PS2 keyboard or mouse wake-up feature. Set this jumper to +5V to wake up the computer from S1 sleep mode (CPU stopped, DRAM refreshed, system running in low power mode) using the connected keyboard, mouse or USB devices. Set this jumper to pins 2-3 (+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 versions which are after 1.01 version can support S3. R P4V8X-MX PS2USBPW 12 23 +5V (Default) +5VSB P4V8X-MX PS2 USB Power Setting 1. This device wake-up feature requires a power supply that can provide 500mA on the +5VSB lead for each USB, keyboard and mouse devices, otherwise, the system will not power up. 2. The total current consumed must NOT exceed the power supply capability (+5VSB) whether under normal condition or in sleep mode. 3. Only PCB 2.00 or later version can support S3 function. 1-16 Chapter 1: Product Introduction

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1-16
Chapter 1: Product Introduction
PS2USBPW
+5V
+5VSB
(Default)
1
2
2
3
P4V8X-MX PS2 USB Power Setting
P4V8X-MX
2.
PS2/USB Device Wake-up (3-pin PS2USBPW)
This jumper allows you to enable or disable the USB/PS2 keyboard or mouse
wake-up feature. Set this jumper to +5V to wake up the computer from S1
sleep mode (CPU stopped, DRAM refreshed, system running in low power
mode) using the connected keyboard, mouse or USB devices. Set this jumper
to pins 2-3 (+5VSB) to wake up from S3 and S4 sleep modes (no power to
CPU, DRAM in slow refresh, power supply in reduced power mode).
1. This device wake-up feature requires a power supply that can provide
500mA on the +5VSB lead for each USB, keyboard and mouse devices,
otherwise, the system will not power up.
2. The total current consumed must NOT exceed the power supply
capability (+5VSB) whether under normal condition or in sleep mode.
3. Only PCB 2.00 or later version can support S3 function.
The versions which are after 1.01 version can support S3.