Chapter 2: Installation
2-9
CD Header
There are two 4-pin CD headers of
different sizes on the motherboard.
These headers allow you to use the
onboard sound for audio CD play-
back. Connect a audio cable from
your CD drive to a header that fi ts
your cable's connector. Only one
CD header can be used at any one
time. See the tables at right for pin
defi nitions.
Chassis Intrusion
The Chassis Intrusion header is desig-
nated JL1. See the table on the right
for pin defi nitions.
Pin
Number
1
2
Definition
Intrusion Input
Ground
Chassis Intrusion
Pin Definitions (JL1)
Fan Headers
There are four fan headers on the
motherboard. These fan headers are
designated CPU Fan, Chassis Fan 1
and Overheat Fans. Connect the fan
on your CPU heatsink to the CPU Fan
header. See the table on the right for
pin defi nitions.
Fan Header Pin Definitions
(CPU, Chassis and Overheat)
Pin
Number
1
2
3
Definition
Ground (black)
+12V (red)
Tachometer
Caution: These fan headers are DC power.
Audio CD Header Pin Definitions
(CD2)
Pin
Number
1
2
3
4
Definition
Right Stereo Signal
Ground
Ground
Left Stereo Signal
Audio CD Header Pin Definitions
(CD1)
Pin
Number
1
2
3
4
Definition
Left Stereo Signal
Ground
Ground
Right Stereo Signal
Serial Ports
There are two serial ports on the
motherboard. COM1 is a port located
next to the mouse/keyboard ports
and COM2 is a header located on the
motherboard near PCI slot 5. See the
table on the right for pin defi nitions.
*NC indicates no connection.
Serial Port Pin Definitions
(COM1, COM2)
Pin Number
Definition
1
CD
2
RD
3
TD
4
DTR
5
Ground
Pin Number Definition
6
DSR
7
RTS
8
CTS
9
RI
10
NC
Note:
Pin 10 is included on the header but not
on the port.
