Front Audio Connector; Connecting Front Panel Cable; Com2 Connector - AOpen MX4LR-GN Easy Installation Manual

6. Support Six USB 2.0 Connectors
This motherboard provides six USB
mouse, keyboard, modem, printer, etc. There are four ports on the PC99 back panel.
You can use proper cable to connect other USB connectors to the back panel or front
panel of chassis.
1
+5V +5V
SBD2- SBD3-
SBD2+ SBD3+
GND GND
Pin1
KEY NC
USB 2.0 Connector
USB 2.0 Connector

7. COM2 Connector

This motherboard provides two serial ports. One of them is on back panel connector, and
the other is on the upper middle of board. With proper cable, you can connect it to the
back panel of chassis.
Pin 1
GND
SOUT
RI#
RTS#
DOD#
1
2
DSR#
SIN
CTS#
DTR#
2.0 connectors to link USB devices, such as

8. Connecting Front Panel Cable

Attach the power LED, speaker, and reset switch connectors to the corresponding pins. If
you enable "Suspend Mode" item in BIOS Setup, the ACPI & Power LED will keep
flashing while the system is in suspend mode.
Locate the power switch cable from your ATX housing. It is 2-pin female connector from
the housing front panel. Plug this connector to the soft-power switch connector marked
SPWR.

9. Front Audio Connector

If the housing has been designed with an audio port on the front panel, you'll be able to
connect onboard audio to front panel through this connector. By the way, please remove
the jumper cap from the Front Audio Connector before you connect the cable. Do not
remove this yellow jumper cap if your housing doesn't have an audio port on the front
panel.
Pin 1
1
AUD_MIC AUD_GND
AUD_MIC_BIAS AUD_VCC
AUD_FPOUT_R
AUD_RET_R
NC KEY
AUD_FPOUT_L AUD_RET_L
Front Audio Connector
1
SPWR
ACPI & PWR
IDE LED
LED
ACPI LED (BLUE) 1
NC
Speaker
Reset NC
+5V
IDE LED
IDE LED
+5V
+5V
GND
NC
SPEAKER
5VSB
SPWR
ACPI LED-
GND
ACPILED
NC
ACPI_B
GND
RESET
GND