Specifications

9. System panel connector (10-1 pin PANEL)
Thisconnectorsupportsseveralchassis-mountedfunctions.
• SystempowerLED(2-pinPWR_LED)
This2-pinconnectorisforthesystempowerLED.ConnectthechassispowerLEDcableto
thisconnector.ThesystempowerLEDlightsupwhenyouturnonthesystempower,and
blinks when the system is in sleep mode.
• HarddiskdriveactivityLED(2-pinHDD_LED)
This2-pinconnectorisfortheHDDActivityLED.ConnecttheHDDActivityLEDcabletothis
connector.TheHDDLEDlightsuporasheswhendataisreadfromorwrittentotheHDD.
• ATXpowerbutton/soft-obutton(2-pinPWR_BTN)
This 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.
10. Speaker connector (4-pin SPEAKER)
The4-pinconnectorisforthechassis-mountedsystemwarningspeaker.Thespeakerallows
you hear system beeps and warnings.
H81M-C R2.0
PIN 1
PWR BTN
PWR_LED+ PWR_LED- PWR GND
HDD_LED+
HDD_LED-
Ground
HWRST#
(NC)
F_PANEL
+PWR LED
+HDD_LED RESET
H81M-C R2.0 System panel connector
H81M-C R2.0
H81M-C R2.0 System panel connector
+5V GND GND Speaker Out
SPEAKER
PIN 1
1-20
Chapter 1: Product introduction