Asus A55-C - Manual (Page 38)

• We recommend that you connect a high-definition front panel audio module to this
connector to avail of the motherboard high-definition audio capability.
• If you want to connect a high definition front panel audio module to this connector, set
the Front Panel Type item in the BIOS to [HD]. See section 2.5.5 Onboard Devices
Configuration for details.
• The front panel audio I/O module is purchased separately.
5. Front panel audio connector (10-1 pin AAFP)
This connector is for a chassis-mounted front panel audio I/O module that supports
either High Definition Audio or AC`97 audio standard. Connect one end of the front
panel audio I/O module cable to this connector.
A55-C
A55-C Front panel audio connector
AAFP
PIN 1
AGND NC SENSE1_RETUR SENSE2_RETUR
PORT1 L PORT1 R PORT2 R
SENSE_SEND
PORT2 L
HD-audio-compliant
pin definition
PIN 1
AGND NC NC NC
MIC2
MICPWR
Line out_R
NC
Line out_L
Legacy AC’97
compliant definition
6. 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
comopnent is removed or replaced. The signal is then generated as a chassis intrusion
event.
By default, the pin 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.
A55-C
A55-C Chassis intrusion connector
+5VSB_MB Chassis Signal GND
CHASSIS
Chapter 1: Product introduction 1-26