2-28
Chapter 2: Hardware information
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 will 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. LAN bandwidth setting (3-pin LAN_BW1)
This jumper allows you to set the LAN bandwidth setting for more efficient IP
load distribution.
DSBV
-D
DSBV-D LAN bandwidth setting
LAN_BW1
Balanced mode
(Default)
Centric mode
2 3
1 2
DSBV
-D
DSBV-D USB device wake up
USBPW12
(Default)
+5V
+5VSB
3
2
2
1
USBPW34
(Default)
+5V
+5VSB
3
2
2
1
