Asus A7V8X-MX User Manual
Page 23

ASUS A7V8X-MX motherboard user manual
1-15
2. USB device wake-up (3-pin USBPW12, USBPW34, USBPW56)
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 USBPW12 and USBPW34 jumpers are for rear USB ports. USBPW56 is
for the internal USB header that you can connect to front 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 does not
power up.
The total current consumed must NOT exceed the power supply capability
(+5VSB) whether under normal condition or in sleep mode.
A7V8X-MX
®
2 3
2
1
A7V8X-MX USB Device Wake Up
USBPWR12
USBPWR34
+5V
(Default)
+5VSB
USBPWR56
+5V
(Default)
+5VSB
2
1
3
2
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