IMB500 LGA1151 ATX Motherboard
Board and Pin Assignments
13
2.4.4
Front Panel Header (CN5)
This is front panel header (7x2-pin p=2.54mm).
Note
[*]
: The buzzer on motherboard will be active when pin 2 and pin 4 is
connected; the external speaker on chassis will be active when pin 2 and
pin 4 is open.
2.4.5
GPIO Header (CN6)
This header (5x2-pin p=2.00mm) is for digital I/O interface.
Note
[*]
:
“H” or “L” means the default voltage is High or Low level, and GPIO
output is 5V. The GPI or GPO and High or Low level can be selected with
BIOS setting.
Pin
Signal
1
Power LED+
2
SPK-
[*]
3
GND
4
BUZZER
5
Power LED-
6
N/C
7
N/C
8
SPK+
[*]
9
PWR-
10
PWR+
11
RESET-
12
RESET+
13
HD LED-
14
HD LED+
Pin Signal
Pin
Signal
1
SIO_GPO74
(0xA06 Bit4, H)
[*]
2
SIO_GPO70
(0xA06 Bit0, H)
3
SIO_GPO75
(0xA06 Bit5, H)
4
SIO_GPO71
(0xA06 Bit1, H)
5
SIO_GPO76
(0xA06 Bit6, H)
6
SIO_GPO72
(0xA06 Bit2, H)
7
SIO_GPO77
(0xA06 Bit7, H)
8
SIO_GPO73
(0xA06 Bit3, H)
9
GND
10
GND
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