Asus H81M-CT User Guide - Page 26

H81M-CT MONO_OUT connector, H81M-CT Serial port connectors

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10. 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. COM RXD DTR DSR CTS DCD TXD GND RTS RI H81M-CT H81M-CT Serial port connectors The COM module is purchased separately. 11. Mono out header (2-pin MONO_OUT) 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 4 Ohms at 2 Watts (rms). H81M-CT MONO_OUT PIN 1 R_OUTR_OUT+ H81M-CT MONO_OUT connector 1-18 Chapter 1: Product introduction

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1-18
Chapter 1: Product introduction
10.
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.
The COM module is purchased separately.
11.
Mono out header (2-pin MONO_OUT)
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 4
Ohms at 2 Watts (rms).
H81M-CT
H81M-CT Serial port connectors
COM
DCD
TXD
GND
RTS
RI
RXD
DTR
DSR
CTS
R_OUT-
R_OUT+
PIN 1
MONO_OUT
H81M-CT
H81M-CT MONO_OUT connector