![PCchips M939LU Manual Download Page 17](http://html1.mh-extra.com/html/pcchips/m939lu/m939lu_manual_1515521017.webp)
Connect the case switches and indicator LEDs to the
SW1
header.
Pin Signal
Pin Signal
1 HDD_LED_P
2 FP
ACPI
LED
3 HDD_LED_N
4 FP
ACPI
LED
5 RST_SW_N
6 PW_BT_P
7 RST_SW_P
8 PW_BT_N
9 RSVD_DNU
10 KEY
Connecting Optional Devices
Refer to the following for information on connecting the
mainboard’s optional devices:
1
1
JUSB1
AUDIO2
EZJ1
1
1
1
SPK1
IR1
SPK1: Speaker Connector
Connect the cable from the PC speaker to the
SPK1
header on the
mainboard.
Pin Signal
Pin Signal
1 SPKR
2 NC
3 GND
4 +5V
AUDIO2: Front Panel Audio Header
This header allows the user to install auxiliary front-oriented
microphone and line-out ports for easier access.
Pin Signal
Pin Signal
1 AUD_MIC
2 AUD_GND
3 AUD_MIC
4 AUD_VCC
5 AUD_FPOUT
6 AUD_RET_R
7 NC
8 KEY
9 AUD_FPOUT
10 AUD_RET_L
13
Summary of Contents for M939LU
Page 4: ...IV ...