Справочник Пользователя для ASUS f2a55-m le desktop motherboard f2a55-m le

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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.
The COM module is purchased separately.
F2A55-M LE
F2A55-M LE Serial port (COM) connector
PIN 1
COM
DCD
TXD
GND
RTS
RI
RXD
DTR
DSR
CTS
ASUS F2A55-M LE
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