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32 ASUS P2B-D2 User’s Manual
Connectors
III. INSTALLATION
III. INSTALLATION
15. Message LED Lead (2-pin MSG.LED)
This indicates whether a message has been received from a fax/modem. The
LED will remain lit when there is no signal and blink when there is data transfer
or waiting in the inbox. This function requires ACPI OS and driver support.
16. System Management Interrupt Lead (2-pin SMI)
This allows the user to manually place the system into a suspend mode or “Green”
mode where system activity is decreased to save electricity and expand the life
of certain components when the system is not in use. This 2-pin connector con-
nects to the case-mounted suspend switch. If you do not have a switch for the
connector, you may use the “Turbo Switch”. SMI is activated when it detects a
short to open moment and therefore leaving it shorted will not cause any prob-
lems. This may require one or two presses depending on the position of the
switch. Wake-up can be controlled by settings in the BIOS but the keyboard will
always allow wake-up (the SMI lead cannot wake up the system). If you want to
use this connector, set “Suspend Mode” under the Power Management Setup
of the BIOS SOFTWARE section to the preferred time after which the system
must go into suspend mode when you press the switch.
17. ATX Power Switch / Soft Power Switch (2-pin PWR.SW)
The system power is controlled by a momentary switch connected to this lead.
Pressing the button once will switch the system between ON and SLEEP or ON
and SOFT OFF depending on the “PWR Button” setting under the Power Man-
agement Setup of the BIOS SOFTWARE section. Pressing the switch while in
the ON mode for more than 4 seconds will turn the system off. The system
power LED shows the status of the system’s power.
18. Reset Switch Lead (2-pin RESET)
This 2-pin connector connects to the case-mounted reset switch for rebooting
your computer without having to turn off your power switch. This is a preferred
method of rebooting to prolong the life of the system’s power supply.
19. System Power LED (3-1 pin PWR.LED)
This 3-1 pin connector connects the system power LED, which lights when the
system is powered on and blinks when it is in sleep mode.
20. Keyboard Lock Switch Lead (2-pin KEY LOCK)
This 2-pin connector connects to the case-mounted key switch to allow key-
board locking.
21. Speaker Connector (4-pin SPEAKER)
This 4-pin connector connects to the case-mounted speaker.
P2B-D2 System Panel Connections
PLED
Ground
MSG.LED
PWR_SW
* Requires an ATX power supply.
+5 V
KEYLOCK
+5V
SPKR
Keyboard Lock
Speaker
Connector
Power LED
Ground
+5 V
Reset SW
SMI Lead
MSG LED
ATX Power Switch*
ExtSMI#
+3VSB
ResetCon
Ground
Ground
Ground