SOYO SY-6BB User Manual page 18

Quick Installation Guide
1. Serial Ports COM1/COM2
External peripherals that use serial transmission scheme include
serial mouse and modem.
Your motherboard comes with two types of serial connectors with
flat cables:
Ø one 9-pin male external connector with 9-pin flat cable
Ø one 25-pin male external connector with 9-pin flat cable
Plug the 9-pin end of the flat cable into the COM1 or COM2 serial
connector on the motherboard, as shown in the figure below, then fix
the external 9-pin or 25-pin connector to the rear panel of the
computer case. Then plug your serial device cable directly into the
9-pin or 25-pin male connector located at the back of your computer.
PS/2 Mouse
Connector
1 1
1
PRT 1
FDC
COM 1
COM 2
9-pin serial
flat cables (2x)
KB
Connector
9-pin male external
serial connector
15
SY-6BB
25-pin male external
serial connector