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Chapter 2: Motherboard information
10. Front panel system panel connector (10-1 pin F_PANEL)
Thisconnectorsupportsseveralchassis-mountedfunctions.
• SystempowerLED(2-pinPWR_LED)
This2-pinconnectorisforthesystempowerLED.Connectthechassis
power LED cable to this connector. The system power LED lights up when
youturnonthesystempower,andblinkswhenthesystemisinsleepmode.
•
Hard disk drive activity LED (2-pin HDD_LED)
This2-pinconnectorisfortheHDDActivityLED.ConnecttheHDDActivity
LEDcabletothisconnector.TheIDELEDlightsuporasheswhendatais
readfromorwrittentotheHDD.
•
ATX power button/soft-off button (2-pin PWR_BTN)
This 2-pin connector is for the system power button.
•
Reset button (2-pin RESET)
This 2-pin connector is for the chassis-mounted reset button for system
reboot without turning off the system power.
11. PS/2 keyboard/mouse connector (6-pin KBMS)
ThisconnectorisforanIBMPS/2-compatiblekeyboardormouse.
EMB-H81B Front panel system connector
PIN 1
PWR_BTN
GND
PWRBTN#
PWR_LED-
PWR_LED+
(NC)
RSTCON#
GND
HDD_LED-
HDD_LED+
F_PANEL
+PWR LED
+HDD_LED RESET
EMB-H81B PS/2 (keyboard+mouse) connector
PIN 1
KBMS
MS_CLK
+5V
KB_CLK
MS_DATA
GND
KB_DATA