Intel mATX i945G-IGM Series User Manual page 42

12. Front panel audio connector (10-1 pin AAFP)
This connector is for a chassis-mounted front panel audio I/O module that
supports either HD Audio or legacy AC'97 audio standard.
Analog front panel connector
It is recommended that you connect a high-definition front panel audio module
to this connector to avail of the motherboard's high-definition audio capability.
13. Chassis intrusion connector (4-1 pin CHASSIS)
This connector is for a chassis-mounted intrusion detection sensor or switch.
Connect one end of the chassis intrusion sensor or switch cable to this
connector. The chassis intrusion sensor or switch sends a high-level signal
to this connector when a chassis component is removed or replaced. The
signal is then generated as a chassis intrusion event.
By default, the pins labeled "Chassis Signal" and "Ground" are shorted with
a jumper cap. Remove the jumper caps only when you intend to use the
chassis intrusion detection feature.
Chassis intrusion connector
1-32
AAFP
Azalia
compliant definition
CHASSIS
GND
(Default)
Chassis Signal
+5VSB_MB
Chapter 1: Product introduction
Legacy AC'97
compliant definition