ASUS ASMM User’s Manual
16
I. ASUS ASMM
• KLOCK_A/KLOCK_B: Key unlock signal connectors for intercepting the
KEYUNLK signal for processing.
Pin# Name
I/O
Description
1
Power LED
-
+5V for Power LED
2
N.C.
3
GND
-
GROUND
4
KEYUNLK
-
KEY unlock signal
5
GND
-
GROUND
NOTE: The key unlock connector from the chassis can be connected to either one
of these connector while the other connector must be connected to the motherboard
key unlock header
• RSTCON_A/RSTCON_B: RESET signal connectors to intercept the reset but-
ton for processing
The reset signal connector from the chassis can be connected to either one of these
connector while the other connector must be connected to the motherboard reset
button header.
• EXT_I2C: External I2C bus connector to provide external access to the system
resource from the I2C bus.
Pin# Name
I/O
Description
1
SMBDATA
I/O
I2C bus data (O.D.)
2
+5V
O
Power for external I2C device
3
GND
-
GROUND
4
SMBCLK
I
I2C bus clock (O.D.)
• CHASSIS: Header designed to provide a connection to the customer’s self-de-
signed chassis intrusion hardware.
NOTE: Because the hardware is powered by battery, the power consumption must be
carefully limited. It is 20 µA for the external detection circuit.
Pin# Name
I/O
Description
1
BATT
-
+3V power for external circuit
2
INTRUD
I
Chassis intrusion signal. “H” indicates intrusion. “L” indicates
chassis is closed.
H: above or equal to 2.5V; L: below or equal to 0.8V
3
GND
-
GROUND
I.ASUS
ASMM
Connectors