VIA Technologies K8T800 Betriebsanweisung Seite 42

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Seitenansicht 41
2-20
Chapter 2: Hardware information
3. USB device wake-up (3-pin USBPWR12, USBPWR34, USBPWR56,
USBPWR78)
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 (no power to CPU, DRAM in slow
refresh, power supply in reduced power mode).
2. 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) if you wish to wake up the
computer when you press a key on the keyboard. This feature requires
an ATX power supply that can supply at least 1A on the +5VSB lead,
and a corresponding setting in the BIOS (See section “4.5.5 APM
Configuration”).
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.
The total current consumed must NOT exceed the power supply
capability (+5VSB) whether under normal condition or in sleep
mode.
K8V
®
K8V SE Deluxe Keyboard Power Setting
(Default)
+5V +5VSB
KBPWR
2312
K8V
®
+5V
(Default)
+5VSB
USBPWR34
3
2
21
+5V
(Default)
+5VSB
K8V SE Deluxe USB Device Wake Up
USBPWR12
3
2
21
+5V
(Default)
+5VSB
USBPWR56
USBPWR78
1
2
3
2
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