Asus H81M-R Manual page 22

1.7.2 Internal connectors
1. 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. Connect one end of the front panel
audio I/O module cable to this connector.
H81M-R
H81M-R Front panel audio connector
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2. Serial port connector (10-1 pin COM)
This connector is for a serial (COM) port. Connect the serial port module cable to this
connector, then install the module to a slot opening at the back of the system chassis.
H81M-R
H81M-R Serial port connectors
The COM module is purchased separately.
1-14
AAFP
PIN 1
HD-audio-compliant
pin definition
We recommend that you connect a high-definition front panel audio module to this
connector to avail of the motherboard's 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 setup to [HD]. If you want to connect an AC'97
front panel audio module to this connector, set the item to [AC97]. By default, this
connector is set to [HD].
PIN 1
Legacy AC'97
compliant definition
COM
RI
CTS RTS
DSR GND
DTR TXD
RXD DCD
PIN 1
Chapter 1: Product introduction