MSI MS-6545 User Manual page 73

Chapter 3
Reload Global Timer Events: Primary IDE 0/1, Secondary IDE 0/1, FDD/
COM/LPT Port, PCI PIRQ [A-D]#
Global Timer Events are I/O events whose occurrence can prevent the system
from entering a power saving mode or can awaken the system from such a
mode. In effect, the system remains alert for anything which occurs to a device
that is configured as Enabled, even when the system is in a power down mode.
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