MSI ATX BX1 User Manual page 47

This is used to enable the keyboard power on feature. This mainboard
supports keyboard power-on feature. The keyboard needs to have a power
supply which can provide sufficient 5V standby power for both the
keyboard and the mainboard.
JVSB
Note: a. To be able to use this function, you need a power supply that
provide enough power for the keyboard power on feature.
(750 ma power supply with 5V Stand-by)
JVSB
Enabled Keyboard Wake-up
System Power Feature
Disabled Keyboard Wake-up
System Power Feature
Feature
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