![](http://pdfasset.owneriq.net/c/59/c59b8e90-83f1-4ce2-b768-8164b583008d/c59b8e90-83f1-4ce2-b768-8164b583008d-bg1a.png)
1-16
Chapter 1: Product introduction
2. USB device wake-up (3-pin USBPW12, USBPW34, USBPW56, USBPW78)
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).
• 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.
K8N-E
®
K8N-E USB device wake-up
3
2
21
+5V
(Default)
+5VS
B
USBPW56
USBPW78
3
2
21
+5V
(Default)
+5VS
B
USBPW12
USBPW34