User's Manual 9
1.8 Main Board Connectors
There are connectors on-board for Power supply, Floppy, IDE, back panel connector,
and front panel I/O.
Front panel Connector
The HOT-559(S) main board provides header connectors to support function
typically located on the chassis bezel. Front panel features support include :
*
Infra-red (IrDA) Port
*
System Reset
*
EPMI
*
Green LED
*
System Speaker
*
Power LED & KeyLock
*
IDE Hard Drive active LED
*
Sleep & Power Control Port
*
SCSI Hard Drive active LED
Speaker
The external speaker provides error beep code information during the Power-on Self
Test, if the system cannot use the video interface.
Sleep / Resume
When Advanced Power Management (APM) is activated in the system BIOS and the
Operating System's APM driver is loaded, Sleep mode (Standby) can be entered in
one of three ways: an optional front panel "Sleep/Resume" button, a user defined
keyboard hot key, or prolonged system inactivity. The Sleep/Resume button is
supported by a 2-pin header located on the front panel I/O connector. Closing the
"Sleep" switch will generate an SMI (System Management Interrupt) to the processor
which immediately goes into System Management Mode (SMM), the so called
"Sleep" mode.
The front panel "Sleep mode" switch must be a momentary two pin SPST type that is
normally open. The function of the Sleep/Resume button can also be achieved via a
keyboard hot-key sequence, or by a time-out of the system inactivity timer. Both the
keyboard hot-key and inactivity timer are programmable in the BIOS setup. To
reactivate the system, or "Resume", the user must simply press the sleep/resume
button again, or use the keyboard or mouse. Mouse activity will only "wake up" the
system is a mouse driver is loaded. While the system is in Stand-by or "sleep" mode
it is fully capable of responding to and servicing external interrupts (such as incoming
FAX) even though the monitor will only turn on if a user interrupt (keyboard/mouse)
occurs as mentioned above.
Содержание HOT-559
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