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Chapter 2: Hardware information
4) USB Device Wake-up (Three x 3 pin USBPWR_12, 34, 56)
Set these jumpers to +5V to allow wake up from the S1 sleep state (CPU
stopped; RAM refreshed; system running in low power mode) using the
connected USB devices. Set to +5VSB to allow wake up from S3 sleep state
(no power to CPU; RAM in slow refresh; power supply in reduced power
mode). The default setting for the three jumpers is [1-2] to select +5V (because
not all computers have the appropriate power supply).
The USBPWR_12 jumper activates device wake-up on the rear panel USB
ports. The USBPWR_34 jumper activates internal header, USB_34, and the
USBPWR_56 jumper activates header, USB_56.
NOTE! This feature requires an ATX power supply that can supply at
least 2A on the +5VSB lead when these jumpers are set to +5VSB.
Otherwise, the system does not power up. The total current consumed
must NOT exceed the power supply capability (+5VSB) whether under
normal working conditions or in sleep mode.
A7S333
®
A7S333 USB Device Wake Up
USBPWR_12
USBPWR_34
USBPWR_56
+5V
1
2
(Default)
+5VSB
2
3
12
+5V
(Default)
+5VSB
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