Chassis Intrusion Switch Connector: J1; Front Audio Connector: J3; Ieee 1394 Connectors: J1394_1, J1394_2 (Optional) - MSI K9ND Speedster User Manual

Chassis Intrusion Switch Connector: J1

This connector connects to a 2-pin chassis switch. If the chassis is opened, the
switch will be short. The system will record this status and show a warning mes-
sage on the screen. To clear the warning, you must enter the BIOS utility and clear the
record.

Front Audio Connector: J3

The J3 connects to an optional audio bracket that provides extra front panel audio IO
jacks. Note that this connector is of proprietary design, not a standard front audio
connector.

IEEE 1394 Connectors: J1394_1, J1394_2 (Optional)

The mainboard provides IEEE1394 pinheaders that allow you to connect IEEE 1394
ports via an external IEEE1394 bracket (optional).
J1394_1/J1394_2
9
10
J1
CHASSIS 1
2
GND
J3
2
1
Pin Definition
PIN SIGNAL PIN
1 LINE_R 5
2 MIC_R 6
3 LINE_JD 7
4 MIC_JD 8
PIN
1
3
1
2 5
7
9
Hardware Setup
8
SIGNAL
LINE_L
MIC_L
KEY
GND
Pin Definition
SIGNAL PIN
TPA+ 2
Ground 4
TPB+ 6
Cable power 8
Key (no pin) 10
SIGNAL
TPA-
Ground
TPB-
Cable power
Ground
2-17