1-4
Chapter 1: Product introduction
12. COM Port headers
These headers are for serial (COM) ports. Connect the serial port module
cables to these headers, then install the modules to slot openings at the back
of the system chassis.
13. Front panel audio header
This header is for a chassis-mounted front panel audio I/O module that
supports HD audio standard. Connect one end of the front panel audio
I/O module cable to this header.
•
We recommend that you connect a high-definition front panel
audio module to this header to avail of the motherboard’s high-
definition audio capability.
•
If you want to connect a high-definition front panel audio
module to this header, set the Front Panel Type item in the
BIOS setup to [HD Audio]. By default, this header is set to [HD
Audio].
14. LPC Debug header
This header allows connection to a LPC Debug card.
•
Scan the QR code to view the meaning of
each debugging code.
•
Debugging codes are only available for
ASUS LPC Debug cards.
•
Contact your region sales representative
for LPC Debug cards ordering.
15. LPT header
The LPT (Line Printing Terminal) header supports devices such as
a printer. LPT standardizes as IEEE 1284, which is the parallel port
interface on IBM PC-compatible computers.
16. Mono-out header
This internal Mono-out header allows connection to an internal, low power
speaker for basic system sound capability. The subsystem is capable of
driving a speaker load of 3 Watts RMS at 4 Ohms.
17. Speaker header
The 4-pin header is for the chassis-mounted system warning speaker. The
speaker allows you to hear system beeps and warnings.
AAFP
AGND NC SENSE1_RETUR
SENSE2_RETUR
PORT1 L PORT1 R PORT2 R
SENSE_SEND
PORT2 L
HD-audio-compliant
pin definition
PIN 1
COM
DCD TXD GND RTS
RI
RXD DTR DSR CTS
PIN 1
O_LPT_XSTB#_R O_LPT_XPD0_R O_LPT_XPD1_R O_LPT_XPD2_R O_LPT_XPD3_R O_LPT_XPD4_R O_LPT_XPD5_R O_LPT_XPD6_R O_LPT_XPD7_R O_LPT_ACK#_R O_LPT_BUSY_R
O_LPT_PE_R
O_LPT_SLCT_R
O_LPT_XAFD#_R O_LPT_ERROR#_R O_LPT_XINIT#_R O_LPT_XSLIN#_R GND GND GND GND GND GND GND GND
PIN 1
+3V +3V CK_24M_LPC GND
S_LAD0 S_LAD1 S_LAD2 S_LAD3
S_LFRAME#
LPC_DEBUG
R_OUT-
R_OUT+
PIN 1
MONO-OUT
+5V GND GND Speaker Out
SPEAKER
PIN 1
